# components.parameters.bbox.description
Only features that have a geometry that intersects the bounding box are selected.The bounding box is provided as four or six numbers, depending on whether the coordinate reference system includes a vertical axis (height or depth).

# components.parameters.bbox-crs.description
Indicates the coordinate reference system for the given bbox coordinates.

# components.parameters.bbox-crs-epsg.description
Indicates the EPSG for the given bbox coordinates.

# components.parameters.crs.description
Indicates the coordinate reference system for the results.

# components.parameters.f.description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.  CSV is also available.

# components.parameters.filter.description
CQL Text filter expression.  CQL JSON cannot be used here, only in the body. 
See also: https://docs.pygeoapi.io/en/latest/cql.html 

Example: time_series_id IN ('64ee32f5350a4ec4967435dcd2e364ea', '3e55d9c2d8a54bec9ca5e292b07d5a96')

# components.parameters.filter-lang.description
CQL language used (e.g., cql-text, cql-json)

# components.parameters.lang.description
The optional lang parameter instructs the server return a response in a certain language, if supported.  If the language is not among the available values, the Accept-Language header language will be used if it is supported. If the header is missing, the default server language is used. Note that providers may only support a single language (or often no language at all), that can be different from the server language.  Language strings can be written in a complex (e.g. "fr-CA,fr;q=0.9,en-US;q=0.8,en;q=0.7"), simple (e.g. "de") or locale-like (e.g. "de-CH" or "fr_BE") fashion.

# components.parameters.limit.description
The optional limit parameter limits the number of items that are presented in the response document

# components.parameters.offset.description
The optional offset parameter indicates the index within the result set from which the server shall begin presenting results in the response document.  The first element has an index of 0 (default).

# components.parameters.properties.description
The properties that should be included. The parameter value is a comma-separated list of property names.

# components.parameters.q.description
Full-text search across the most relevant text fields for this collection (e.g. site name, identifier, number, state, county, and site type).

Matching rules:

  - Case-insensitive, with prefix matching (e.g. `poud` matches `POUDRE`).
  - Words separated by spaces are AND'd together (all must match).
  - Terms separated by commas are OR'd together (any may match).
  - Common abbreviations are expanded, so `river` also matches sites stored as `RV` (and vice versa).

Results are ordered by relevance when `q` is supplied without an explicit `sortby`.

Examples:

  - `q=poudre` — sites whose name/identifier starts with or contains `poudre`
  - `q=colorado river` — sites matching both `colorado` and `river`/`rv`
  - `q=poudre,cache creek` — sites matching `poudre` OR (`cache` AND `creek`/`ck`)

# components.parameters.skipGeometry.description
This option can be used to skip response geometries for each feature.

# components.parameters.statistic_id.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html](https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html).

# components.parameters.statistic_id.schema.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html](https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html).

# components.parameters.time.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# components.parameters.time.schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# components.parameters.vendorSpecificParameters.description
Additional "free-form" parameters that are not explicitly defined

# components.parameters.wda_sortby.description
Specifies a comma-separated list of property names by which the response shall be sorted.  If the property name is preceded by a plus (+) sign it indicates an ascending sort for that property.  If the property name is preceded by a minus (-) sign it indicates a descending sort for that property.  If the property is not preceded by a plus or minus, then the default sort order implied is ascending (+).  

Only a single page of data can be returned when specifying sortby. If you need more than a single page of data, don't specify a sortby value and sort the full data set after it's been downloaded.

# components.responses.Forbidden403.content.application/json.examples.missingApiKey.value.error.message
No api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/

# components.responses.Forbidden403.content.application/xml.example
&ltresponse&gt
      &lterror&gt
        &ltcode&gtAPI_KEY_MISSING&lt/code&gt
        &ltmessage&gtNo api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/&lt/message&gt
      &lt/error&gt
    &lt/response&gt

# components.responses.Forbidden403.content.text/csv.examples.missingApiKeyCsv.value
Error Code,Error Message
API_KEY_MISSING, No api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/

# components.responses.Forbidden403.content.text/html.examples.missingApiKeyHtml.value
&lthtml&gt
      &ltbody&gt
        &lth1&gtAPI_KEY_MISSING&lt/h1&gt
        &ltp&gtNo api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/&lt/p&gt
      &lt/body&gt
    &lt/html&gt

# components.responses.Forbidden403.description
Forbidden - API key is missing or not authorized for this resource.

# components.responses.Tiles.description
Retrieves the tiles description for this collection

# components.responses.TooManyRequests429.content.application/json.examples.rateLimitExceeded.value.error.message
You have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.

# components.responses.TooManyRequests429.content.application/xml.example
&ltresponse&gt
      &lterror&gt
        &ltcode&gtOVER_RATE_LIMIT&lt/code&gt
        &ltmessage&gtYou have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.&lt/message&gt
      &lt/error&gt
    &lt/response&gt

# components.responses.TooManyRequests429.content.text/csv.examples.rateLimitCsv.value
Error Code,Error Message
OVER_RATE_LIMIT,You have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.

# components.responses.TooManyRequests429.content.text/html.examples.rateLimitHtml.value
&lthtml&gt
      &ltbody&gt
        &lth1&gtOVER_RATE_LIMIT&lt/h1&gt
        &ltp&gtYou have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.&lt/p&gt
      &lt/body&gt
    &lt/html&gt

# components.responses.TooManyRequests429.description
Too Many Requests - Rate limit exceeded.

# components.schemas.queryable.properties.description.description
a human-readable narrative describing the queryable

# components.schemas.queryable.properties.language.description
the language used for the title and description

# components.schemas.queryable.properties.queryable.description
the token that may be used in a CQL predicate

# components.schemas.queryable.properties.title.description
a human readable title for the queryable

# components.schemas.queryable.properties.type-ref.description
a reference to the formal definition of the type

# components.securitySchemes.ApiKeyHeader.description
Providing your API key gives you higher rate limits when querying our APIs. You can obtain an API key at https://api.waterdata.usgs.gov/signup

# components.securitySchemes.ApiKeyQuery.description
Providing your API key gives you higher rate limits when querying our APIs. You can obtain an API key at https://api.waterdata.usgs.gov/signup

# info.contact.name
US Geological Survey - Water Data for the Nation

# info.description
The United States Geological Survey (USGS) collects water data at monitoring locations across the United States using both automated sensors and manual data collection. These APIs provide access to that data, alongside metadata about data collections and monitoring locations, in standardized machine-readable formats.

# paths./collections/agency-codes.get.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/agency-codes/items.get.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/agency-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/agency-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/agency-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/agency-codes/items.options.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/agency-codes/items.post.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/agency-codes/items/{featureId}.get.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/agency-codes/items/{featureId}.options.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/agency-codes/queryables.get.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/agency-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/agency-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/agency-codes/schema.get.description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# paths./collections/altitude-datums.get.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/altitude-datums/items.get.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/altitude-datums/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/altitude-datums/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/altitude-datums/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/altitude-datums/items.options.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/altitude-datums/items.post.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/altitude-datums/items/{featureId}.get.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/altitude-datums/items/{featureId}.options.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/altitude-datums/queryables.get.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/altitude-datums/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/altitude-datums/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/altitude-datums/schema.get.description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# paths./collections/aquifer-codes.get.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-codes/items.get.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/aquifer-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/aquifer-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/aquifer-codes/items.get.parameters[].description
Aquifer code. The eight-character string identifying an aquifer. Codes are defined by the \"Catalog of Aquifer Names and Geologic Unit Codes used by the Water Resources Division.\"

# paths./collections/aquifer-codes/items.get.parameters[].schema.description
Aquifer code. The eight-character string identifying an aquifer. Codes are defined by the \"Catalog of Aquifer Names and Geologic Unit Codes used by the Water Resources Division.\"

# paths./collections/aquifer-codes/items.get.parameters[].description
Aquifer name. Aquifer names are defined by the \"Catalog of Aquifer Names and Geologic Unit Codes used by the Water Resources Division.\"

# paths./collections/aquifer-codes/items.get.parameters[].schema.description
Aquifer name. Aquifer names are defined by the \"Catalog of Aquifer Names and Geologic Unit Codes used by the Water Resources Division.\"

# paths./collections/aquifer-codes/items.options.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-codes/items.post.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-codes/items/{featureId}.get.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-codes/items/{featureId}.options.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-codes/queryables.get.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/aquifer-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/aquifer-codes/schema.get.description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# paths./collections/aquifer-types.get.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/aquifer-types/items.get.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/aquifer-types/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/aquifer-types/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/aquifer-types/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/aquifer-types/items.get.parameters[].description
The single-character code identifying the type of aquifer

# paths./collections/aquifer-types/items.get.parameters[].schema.description
The single-character code identifying the type of aquifer

# paths./collections/aquifer-types/items.options.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/aquifer-types/items.post.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/aquifer-types/items/{featureId}.get.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/aquifer-types/items/{featureId}.options.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/aquifer-types/queryables.get.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/aquifer-types/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/aquifer-types/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/aquifer-types/schema.get.description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

# paths./collections/channel-measurements.get.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/channel-measurements/items.get.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/channel-measurements/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/channel-measurements/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/channel-measurements/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/channel-measurements/items.get.parameters[].description
A universally unique identifier (UUID) representing a single version of a record. It is not stable over time. Every time the record is refreshed in our database (which may happen as part of normal operations and does not imply any change to the data itself) a new ID will be generated. To uniquely identify a single observation over time, compare the `time` and `time_series_id` fields; each time series will only have a single observation at a given `time`.

# paths./collections/channel-measurements/items.get.parameters[].schema.description
A universally unique identifier (UUID) representing a single version of a record. It is not stable over time. Every time the record is refreshed in our database (which may happen as part of normal operations and does not imply any change to the data itself) a new ID will be generated. To uniquely identify a single observation over time, compare the `time` and `time_series_id` fields; each time series will only have a single observation at a given `time`.

# paths./collections/channel-measurements/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/channel-measurements/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/channel-measurements/items.get.parameters[].description
A universally unique identifier (UUID) for the field visit. Multiple measurements may be made during a single field visit.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/channel-measurements/items.get.parameters[].schema.description
A universally unique identifier (UUID) for the field visit. Multiple measurements may be made during a single field visit.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/channel-measurements/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/channel-measurements/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/channel-measurements/items.get.parameters[].description
The units for channel location distance.

# paths./collections/channel-measurements/items.get.parameters[].schema.description
The units for channel location distance.

# paths./collections/channel-measurements/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/channel-measurements/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/channel-measurements/items.get.parameters[].description
Location of the measurement from the gage.

# paths./collections/channel-measurements/items.get.parameters[].schema.description
Location of the measurement from the gage.

# paths./collections/channel-measurements/items.options.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/channel-measurements/items.post.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/channel-measurements/items.post.summary
Get Channel measurements items with CQL2

# paths./collections/channel-measurements/items/{featureId}.get.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/channel-measurements/items/{featureId}.options.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/channel-measurements/items/{featureId}.options.summary
Options for Channel measurements item by id

# paths./collections/channel-measurements/queryables.get.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/channel-measurements/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/channel-measurements/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/channel-measurements/schema.get.description
Channel measurements taken as part of streamflow field measurements.

# paths./collections/citations.get.description
Citations associated with water measurement methods.

# paths./collections/citations/items.get.description
Citations associated with water measurement methods.

# paths./collections/citations/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/citations/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/citations/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/citations/items.get.parameters[].description
Method citation name. An abbreviated citation that describes the reference.

# paths./collections/citations/items.get.parameters[].schema.description
Method citation name. An abbreviated citation that describes the reference.

# paths./collections/citations/items.options.description
Citations associated with water measurement methods.

# paths./collections/citations/items.post.description
Citations associated with water measurement methods.

# paths./collections/citations/items/{featureId}.get.description
Citations associated with water measurement methods.

# paths./collections/citations/items/{featureId}.options.description
Citations associated with water measurement methods.

# paths./collections/citations/queryables.get.description
Citations associated with water measurement methods.

# paths./collections/citations/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/citations/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/citations/schema.get.description
Citations associated with water measurement methods.

# paths./collections/combined-metadata.get.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/combined-metadata/items.get.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/combined-metadata/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/combined-metadata/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/combined-metadata/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/combined-metadata/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/combined-metadata/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/combined-metadata/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/combined-metadata/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/combined-metadata/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/combined-metadata/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/combined-metadata/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/combined-metadata/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/combined-metadata/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/combined-metadata/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/combined-metadata/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/combined-metadata/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/combined-metadata/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/combined-metadata/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/combined-metadata/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/combined-metadata/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/combined-metadata/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/combined-metadata/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/combined-metadata/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/combined-metadata/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/combined-metadata/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/combined-metadata/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/combined-metadata/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/combined-metadata/items.get.parameters[].description
The ID of the time series or field measurement series (identified by `data_type`) that collection metadata corresponds to. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The ID of the time series or field measurement series (identified by `data_type`) that collection metadata corresponds to. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/combined-metadata/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/combined-metadata/items.get.parameters[].description
The datetime of the earliest observation in the time series. Together with `end_utc`, this field represents the period of record of a time series. Note that some time series may have large gaps in their collection record.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `begin_utc` that intersects the value of datetime are selected.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The datetime of the earliest observation in the time series. Together with `end_utc`, this field represents the period of record of a time series. Note that some time series may have large gaps in their collection record.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `begin_utc` that intersects the value of datetime are selected.

# paths./collections/combined-metadata/items.get.parameters[].schema.title
Time series first observation timestamp - UTC

# paths./collections/combined-metadata/items.get.parameters[].description
The datetime of the most recent observation in the time series. Data returned by this endpoint updates at most once per day, and potentially less frequently than that, and as such there may be more recent observations within a time series than the time series `end_utc` value reflects. Together with `begin_utc`, this field represents the period of record of a time series. It is additionally used to determine whether a time series is "active".
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `end_utc` that intersects the value of datetime are selected.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The datetime of the most recent observation in the time series. Data returned by this endpoint updates at most once per day, and potentially less frequently than that, and as such there may be more recent observations within a time series than the time series `end_utc` value reflects. Together with `begin_utc`, this field represents the period of record of a time series. It is additionally used to determine whether a time series is "active".
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `end_utc` that intersects the value of datetime are selected.

# paths./collections/combined-metadata/items.get.parameters[].schema.title
Time series most recent observation timestamp - UTC

# paths./collections/combined-metadata/items.get.parameters[].description
The computational period type of data collected at the monitoring location. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The computational period type of data collected at the monitoring location. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].description
Indicates the computation performed to calculate this time series. Values of "Instantaneous" reflect point measurements. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Indicates the computation performed to calculate this time series. Values of "Instantaneous" reflect point measurements. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/combined-metadata/items.get.parameters[].description
Thresholds represent known numeric limits for a time series, for example the historic maximum value for a parameter or a level below which a sensor is non-operative. These thresholds are sometimes used to automatically determine if an observation is erroneous due to sensor error, and therefore shouldn't be included in the time series.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Thresholds represent known numeric limits for a time series, for example the historic maximum value for a parameter or a level below which a sensor is non-operative. These thresholds are sometimes used to automatically determine if an observation is erroneous due to sensor error, and therefore shouldn't be included in the time series.

# paths./collections/combined-metadata/items.get.parameters[].description
An optional human-readable identifier used to specify where measurements are recorded at a monitoring location.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
An optional human-readable identifier used to specify where measurements are recorded at a monitoring location.

# paths./collections/combined-metadata/items.get.parameters[].description
A flag identifying if the time series is a "primary" time series. "Primary" time series (which have this flag) are standard observations which undergo [Bureau review and approval processes](https://www.usgs.gov/survey-manual/5028-fundamental-science-practices-review-and-approval-scientific-data-release). Non-primary time series, which will have missing values for "primary", are provisional datasets made available to meet the need for timely best science and to assist with daily operations which need real-time information. Non-primary time series data are only retained by this system for 120 days. See the [USGS Provisional Data Statement](https://waterdata.usgs.gov/provisional-data-statement/) for more information.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A flag identifying if the time series is a "primary" time series. "Primary" time series (which have this flag) are standard observations which undergo [Bureau review and approval processes](https://www.usgs.gov/survey-manual/5028-fundamental-science-practices-review-and-approval-scientific-data-release). Non-primary time series, which will have missing values for "primary", are provisional datasets made available to meet the need for timely best science and to assist with daily operations which need real-time information. Non-primary time series data are only retained by this system for 120 days. See the [USGS Provisional Data Statement](https://waterdata.usgs.gov/provisional-data-statement/) for more information.

# paths./collections/combined-metadata/items.get.parameters[].description
An optional description of the time series. WDFN and other USGS data dissemination products use this field, in combination with sublocation_identifier, to distinguish the differences between multiple time series for the same parameter code, statistic code, and monitoring location.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
An optional description of the time series. WDFN and other USGS data dissemination products use this field, in combination with sublocation_identifier, to distinguish the differences between multiple time series for the same parameter code, statistic code, and monitoring location.

# paths./collections/combined-metadata/items.get.parameters[].description
A description of what the parameter code represents, as used by WDFN and other USGS data dissemination products.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
A description of what the parameter code represents, as used by WDFN and other USGS data dissemination products.

# paths./collections/combined-metadata/items.get.parameters[].description
The unique identifier representing the parent or "upchain" time series that a daily values time series is generated from. Daily values time series have one and only one parent time series.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The unique identifier representing the parent or "upchain" time series that a daily values time series is generated from. Daily values time series have one and only one parent time series.

# paths./collections/combined-metadata/items.get.parameters[].description
The time interval threshold used for gap detection in the time series.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
The time interval threshold used for gap detection in the time series.

# paths./collections/combined-metadata/items.get.parameters[].description
Distinguishes field-measurement readings from measurements. Readings have a value of ReferencePrimary; measurements are Discharge or MeanGageHeight.

# paths./collections/combined-metadata/items.get.parameters[].schema.description
Distinguishes field-measurement readings from measurements. Readings have a value of ReferencePrimary; measurements are Discharge or MeanGageHeight.

# paths./collections/combined-metadata/items.options.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/combined-metadata/items.post.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/combined-metadata/items/{featureId}.get.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/combined-metadata/items/{featureId}.options.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/combined-metadata/items/{featureId}.options.summary
Options for Combined metadata item by id

# paths./collections/combined-metadata/queryables.get.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/combined-metadata/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/combined-metadata/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/combined-metadata/schema.get.description
This endpoint combines metadata from timeseries and field measurements collections by site.

# paths./collections/continuous.get.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/continuous/items.get.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/continuous/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/continuous/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/continuous/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/continuous/items.get.parameters[].description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/continuous/items.get.parameters[].schema.description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/continuous/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/continuous/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/continuous/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/continuous/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/continuous/items.get.parameters[].description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).

# paths./collections/continuous/items.get.parameters[].schema.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).

# paths./collections/continuous/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/continuous/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/continuous/items.get.parameters[].description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/continuous/items.get.parameters[].schema.description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/continuous/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/continuous/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/continuous/items.get.parameters[].description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/continuous/items.get.parameters[].schema.description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/continuous/items.get.parameters[].description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/continuous/items.get.parameters[].schema.description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/continuous/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/continuous/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/continuous/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/continuous/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/continuous/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/continuous/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/continuous/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/continuous/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/continuous/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/continuous/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/continuous/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/continuous/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/continuous/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/continuous/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/continuous/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/continuous/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/continuous/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/continuous/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/continuous/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/continuous/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/continuous/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/continuous/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/continuous/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/continuous/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/continuous/items.get.parameters[].description
The time interval threshold used for gap detection in the time series.

# paths./collections/continuous/items.get.parameters[].schema.description
The time interval threshold used for gap detection in the time series.

# paths./collections/continuous/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/continuous/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/continuous/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/continuous/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/continuous/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/continuous/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/continuous/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/continuous/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/continuous/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/continuous/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/continuous/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/continuous/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/continuous/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/continuous/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/continuous/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/continuous/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/continuous/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/continuous/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/continuous/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/continuous/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/continuous/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/continuous/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/continuous/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/continuous/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/continuous/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/continuous/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/continuous/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/continuous/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/continuous/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/continuous/items.options.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/continuous/items.post.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/continuous/items/{featureId}.get.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/continuous/items/{featureId}.options.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/continuous/items/{featureId}.options.summary
Options for Continuous values item by id

# paths./collections/continuous/queryables.get.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/continuous/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/continuous/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/continuous/schema.get.description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# paths./collections/coordinate-accuracy-codes.get.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-accuracy-codes/items.get.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-accuracy-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/coordinate-accuracy-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/coordinate-accuracy-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/coordinate-accuracy-codes/items.options.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-accuracy-codes/items.options.summary
Options for Coordinate accuracy codes items

# paths./collections/coordinate-accuracy-codes/items.post.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-accuracy-codes/items.post.summary
Get Coordinate accuracy codes items with CQL2

# paths./collections/coordinate-accuracy-codes/items/{featureId}.get.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-accuracy-codes/items/{featureId}.get.summary
Get Coordinate accuracy codes item by id

# paths./collections/coordinate-accuracy-codes/items/{featureId}.options.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-accuracy-codes/items/{featureId}.options.summary
Options for Coordinate accuracy codes item by id

# paths./collections/coordinate-accuracy-codes/queryables.get.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-accuracy-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/coordinate-accuracy-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/coordinate-accuracy-codes/queryables.get.summary
Get Coordinate accuracy codes queryables

# paths./collections/coordinate-accuracy-codes/schema.get.description
Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

# paths./collections/coordinate-datum-codes.get.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-datum-codes/items.get.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-datum-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/coordinate-datum-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/coordinate-datum-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/coordinate-datum-codes/items.options.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-datum-codes/items.options.summary
Options for Coordinate datum codes items

# paths./collections/coordinate-datum-codes/items.post.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-datum-codes/items.post.summary
Get Coordinate datum codes items with CQL2

# paths./collections/coordinate-datum-codes/items/{featureId}.get.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-datum-codes/items/{featureId}.options.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-datum-codes/items/{featureId}.options.summary
Options for Coordinate datum codes item by id

# paths./collections/coordinate-datum-codes/queryables.get.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-datum-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/coordinate-datum-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/coordinate-datum-codes/schema.get.description
Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

# paths./collections/coordinate-method-codes.get.description
Methods used to determine latitude-longitude values.

# paths./collections/coordinate-method-codes/items.get.description
Methods used to determine latitude-longitude values.

# paths./collections/coordinate-method-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/coordinate-method-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/coordinate-method-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/coordinate-method-codes/items.options.description
Methods used to determine latitude-longitude values.

# paths./collections/coordinate-method-codes/items.options.summary
Options for Coordinate method codes items

# paths./collections/coordinate-method-codes/items.post.description
Methods used to determine latitude-longitude values.

# paths./collections/coordinate-method-codes/items.post.summary
Get Coordinate method codes items with CQL2

# paths./collections/coordinate-method-codes/items/{featureId}.get.description
Methods used to determine latitude-longitude values.

# paths./collections/coordinate-method-codes/items/{featureId}.options.description
Methods used to determine latitude-longitude values.

# paths./collections/coordinate-method-codes/items/{featureId}.options.summary
Options for Coordinate method codes item by id

# paths./collections/coordinate-method-codes/queryables.get.description
Methods used to determine latitude-longitude values.

# paths./collections/coordinate-method-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/coordinate-method-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/coordinate-method-codes/schema.get.description
Methods used to determine latitude-longitude values.

# paths./collections/counties.get.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/counties/items.get.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/counties/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/counties/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/counties/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/counties/items.get.parameters[].description
FIPS country code as defined by FIPS PUB 10-4: Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions.

# paths./collections/counties/items.get.parameters[].schema.description
FIPS country code as defined by FIPS PUB 10-4: Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions.

# paths./collections/counties/items.get.parameters[].description
County FIPS code. A two digit code indicating a U.S. county as defined by FIPS 5-2.

# paths./collections/counties/items.get.parameters[].schema.description
County FIPS code. A two digit code indicating a U.S. county as defined by FIPS 5-2.

# paths./collections/counties/items.get.parameters[].description
County name. The name of a U.S. county as defined by FIPS 5-2.

# paths./collections/counties/items.get.parameters[].schema.description
County name. The name of a U.S. county as defined by FIPS 5-2.

# paths./collections/counties/items.options.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/counties/items.post.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/counties/items/{featureId}.get.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/counties/items/{featureId}.options.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/counties/items/{featureId}.options.summary
Options for County identifiers item by id

# paths./collections/counties/queryables.get.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/counties/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/counties/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/counties/schema.get.description
The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

# paths./collections/countries/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/countries/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/countries/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/countries/items.get.parameters[].description
FIPS country code as defined by FIPS PUB 10-4: Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions.

# paths./collections/countries/items.get.parameters[].schema.description
FIPS country code as defined by FIPS PUB 10-4: Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions.

# paths./collections/countries/items/{featureId}.options.summary
Options for Country identifiers item by id

# paths./collections/countries/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/countries/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/daily.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/daily/items.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/daily/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/daily/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/daily/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/daily/items.get.parameters[].description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].schema.description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].schema.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/daily/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/daily/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/daily/items.get.parameters[].description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/daily/items.get.parameters[].schema.description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/daily/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/daily/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/daily/items.get.parameters[].description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/daily/items.get.parameters[].schema.description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/daily/items.get.parameters[].description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/daily/items.get.parameters[].schema.description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/daily/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/daily/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/daily/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/daily/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/daily/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/daily/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/daily/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/daily/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/daily/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/daily/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/daily/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/daily/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/daily/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/daily/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/daily/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/daily/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/daily/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/daily/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/daily/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/daily/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/daily/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/daily/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/daily/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/daily/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/daily/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/daily/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/daily/items.get.parameters[].description
The time interval threshold used for gap detection in the time series.

# paths./collections/daily/items.get.parameters[].schema.description
The time interval threshold used for gap detection in the time series.

# paths./collections/daily/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/daily/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/daily/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/daily/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/daily/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/daily/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/daily/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/daily/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/daily/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/daily/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/daily/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/daily/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/daily/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/daily/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/daily/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/daily/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/daily/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/daily/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/daily/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/daily/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/daily/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/daily/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/daily/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/daily/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/daily/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/daily/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/daily/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/daily/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/daily/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/daily/items.options.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/daily/items.post.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/daily/items/{featureId}.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/daily/items/{featureId}.options.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/daily/queryables.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/daily/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/daily/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/daily/schema.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/field-measurements.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/field-measurements-metadata.get.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements-metadata.get.summary
Get Field measurements metadata metadata

# paths./collections/field-measurements-metadata/items.get.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/field-measurements-metadata/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
A unique identifier representing a single collection series. This corresponds to the `field_measurement_series_id` field in the `field-measurements` endpoint. Collection series are defined as the set of field measurements at a given monitoring location for a single parameter code using a single reading type.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
A unique identifier representing a single collection series. This corresponds to the `field_measurement_series_id` field in the `field-measurements` endpoint. Collection series are defined as the set of field measurements at a given monitoring location for a single parameter code using a single reading type.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
Distinguishes field-measurement readings from measurements. Readings have a value of ReferencePrimary; measurements are Discharge or MeanGageHeight.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
Distinguishes field-measurement readings from measurements. Readings have a value of ReferencePrimary; measurements are Discharge or MeanGageHeight.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
A description of what the parameter code represents, as used by WDFN and other USGS data dissemination products.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
A description of what the parameter code represents, as used by WDFN and other USGS data dissemination products.

# paths./collections/field-measurements-metadata/items.get.parameters[].description
The datetime of the earliest observation in the time series. Together with `end_utc`, this field represents the period of record of a time series. Note that some time series may have large gaps in their collection record.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `begin_utc` that intersects the value of datetime are selected.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
The datetime of the earliest observation in the time series. Together with `end_utc`, this field represents the period of record of a time series. Note that some time series may have large gaps in their collection record.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `begin_utc` that intersects the value of datetime are selected.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.title
Time series first observation timestamp - UTC

# paths./collections/field-measurements-metadata/items.get.parameters[].description
The datetime of the most recent observation in the time series. Data returned by this endpoint updates at most once per day, and potentially less frequently than that, and as such there may be more recent observations within a time series than the time series `end_utc` value reflects. Together with `begin_utc`, this field represents the period of record of a time series. It is additionally used to determine whether a time series is "active".
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `end_utc` that intersects the value of datetime are selected.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
The datetime of the most recent observation in the time series. Data returned by this endpoint updates at most once per day, and potentially less frequently than that, and as such there may be more recent observations within a time series than the time series `end_utc` value reflects. Together with `begin_utc`, this field represents the period of record of a time series. It is additionally used to determine whether a time series is "active".
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `end_utc` that intersects the value of datetime are selected.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.title
Time series most recent observation timestamp - UTC

# paths./collections/field-measurements-metadata/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/field-measurements-metadata/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/field-measurements-metadata/items.options.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements-metadata/items.options.summary
Options for Field measurements metadata items

# paths./collections/field-measurements-metadata/items.post.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements-metadata/items.post.summary
Get Field measurements metadata items with CQL2

# paths./collections/field-measurements-metadata/items/{featureId}.get.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements-metadata/items/{featureId}.get.summary
Get Field measurements metadata item by id

# paths./collections/field-measurements-metadata/items/{featureId}.options.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements-metadata/items/{featureId}.options.summary
Options for Field measurements metadata item by id

# paths./collections/field-measurements-metadata/queryables.get.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements-metadata/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/field-measurements-metadata/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/field-measurements-metadata/queryables.get.summary
Get Field measurements metadata queryables

# paths./collections/field-measurements-metadata/schema.get.description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# paths./collections/field-measurements/items.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/field-measurements/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/field-measurements/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/field-measurements/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/field-measurements/items.get.parameters[].description
A unique identifier representing a single collection series. This corresponds to the `id` field in the `field-measurements-metadata` endpoint. Collection series are defined as the set of field measurements at a given monitoring location for a single parameter code using a single reading type.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A unique identifier representing a single collection series. This corresponds to the `id` field in the `field-measurements-metadata` endpoint. Collection series are defined as the set of field measurements at a given monitoring location for a single parameter code using a single reading type.

# paths./collections/field-measurements/items.get.parameters[].description
Distinguishes field-measurement readings from measurements. Readings have a value of ReferencePrimary; measurements are Discharge or MeanGageHeight.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Distinguishes field-measurement readings from measurements. Readings have a value of ReferencePrimary; measurements are Discharge or MeanGageHeight.

# paths./collections/field-measurements/items.get.parameters[].description
A universally unique identifier (UUID) for the field visit. Multiple measurements may be made during a single field visit.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A universally unique identifier (UUID) for the field visit. Multiple measurements may be made during a single field visit.

# paths./collections/field-measurements/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/field-measurements/items.get.parameters[].description
A short code corresponding to the observing procedure for the field measurement.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A short code corresponding to the observing procedure for the field measurement.

# paths./collections/field-measurements/items.get.parameters[].description
Water measurement or water-quality observing procedure descriptions.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Water measurement or water-quality observing procedure descriptions.

# paths./collections/field-measurements/items.get.parameters[].description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/field-measurements/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/field-measurements/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/field-measurements/items.get.parameters[].description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/field-measurements/items.get.parameters[].schema.description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/field-measurements/items.get.parameters[].description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/field-measurements/items.get.parameters[].schema.description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/field-measurements/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/field-measurements/items.get.parameters[].description
The state of the control feature at the time of observation.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The state of the control feature at the time of observation.

# paths./collections/field-measurements/items.get.parameters[].description
A qualitative estimate of the quality of a measurement.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A qualitative estimate of the quality of a measurement.

# paths./collections/field-measurements/items.get.parameters[].description
The calendar year the field measurement was taken.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The calendar year the field measurement was taken.

# paths./collections/field-measurements/items.get.parameters[].description
The calendar month the field measurement was taken. If null, the month is unknown.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The calendar month the field measurement was taken. If null, the month is unknown.

# paths./collections/field-measurements/items.get.parameters[].description
The day of the month the field measurement was taken. If null, the day is unknown.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The day of the month the field measurement was taken. If null, the day is unknown.

# paths./collections/field-measurements/items.get.parameters[].description
The time of day the field measurement was taken. If null, the time of day is unknown.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The time of day the field measurement was taken. If null, the time of day is unknown.

# paths./collections/field-measurements/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/field-measurements/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/field-measurements/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/field-measurements/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/field-measurements/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/field-measurements/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/field-measurements/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/field-measurements/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/field-measurements/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/field-measurements/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/field-measurements/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/field-measurements/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/field-measurements/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/field-measurements/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/field-measurements/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/field-measurements/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/field-measurements/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/field-measurements/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/field-measurements/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/field-measurements/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/field-measurements/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/field-measurements/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/field-measurements/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/field-measurements/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/field-measurements/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/field-measurements/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/field-measurements/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/field-measurements/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/field-measurements/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/field-measurements/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/field-measurements/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/field-measurements/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/field-measurements/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/field-measurements/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/field-measurements/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/field-measurements/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/field-measurements/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/field-measurements/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/field-measurements/items.options.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/field-measurements/items.post.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/field-measurements/items/{featureId}.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/field-measurements/items/{featureId}.options.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/field-measurements/items/{featureId}.options.summary
Options for Field measurements item by id

# paths./collections/field-measurements/queryables.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/field-measurements/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/field-measurements/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/field-measurements/schema.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/hydrologic-unit-codes.get.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/hydrologic-unit-codes.get.summary
Get Hydrologic unit codes (HUCs) metadata

# paths./collections/hydrologic-unit-codes/items.get.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/hydrologic-unit-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/hydrologic-unit-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/hydrologic-unit-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/hydrologic-unit-codes/items.get.parameters[].description
Hydrologic unit code. The format of the code is ('RRSSBBUUWWXX') where: 'RR' is the 2-digit code for the region. 'SS' is the 2-digit code for the sub-region. 'BB' is the 2-digit code for the basin. 'UU' is the 2-digit code for the sub-basin. 'WW' is the 2-digit code for the watershed. 'XX' is the 2-digit code for the sub-watershed. Watersheds are delineated by USGS using a nationwide system based on surface hydrologic features. This system divides the country into 22 regions (2-digit), 245 subregions (4-digit), 405 basins (6-digit), ~2,400 subbasins (8-digit), ~19,000 watersheds (10-digit), and ~105,000 subwatersheds (12-digit). A hierarchical hydrologic unit code (HUC) consisting of 2 additional digits for each level in the hydrologic unit system is used to identify any hydrologic area (see Federal Standards and Procedures for the National Watershed Boundary Dataset - https://pubs.usgs.gov/tm/11/a3/).

# paths./collections/hydrologic-unit-codes/items.get.parameters[].schema.description
Hydrologic unit code. The format of the code is ('RRSSBBUUWWXX') where: 'RR' is the 2-digit code for the region. 'SS' is the 2-digit code for the sub-region. 'BB' is the 2-digit code for the basin. 'UU' is the 2-digit code for the sub-basin. 'WW' is the 2-digit code for the watershed. 'XX' is the 2-digit code for the sub-watershed. Watersheds are delineated by USGS using a nationwide system based on surface hydrologic features. This system divides the country into 22 regions (2-digit), 245 subregions (4-digit), 405 basins (6-digit), ~2,400 subbasins (8-digit), ~19,000 watersheds (10-digit), and ~105,000 subwatersheds (12-digit). A hierarchical hydrologic unit code (HUC) consisting of 2 additional digits for each level in the hydrologic unit system is used to identify any hydrologic area (see Federal Standards and Procedures for the National Watershed Boundary Dataset - https://pubs.usgs.gov/tm/11/a3/).

# paths./collections/hydrologic-unit-codes/items.options.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/hydrologic-unit-codes/items.options.summary
Options for Hydrologic unit codes (HUCs) items

# paths./collections/hydrologic-unit-codes/items.post.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/hydrologic-unit-codes/items.post.summary
Get Hydrologic unit codes (HUCs) items with CQL2

# paths./collections/hydrologic-unit-codes/items/{featureId}.get.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/hydrologic-unit-codes/items/{featureId}.get.summary
Get Hydrologic unit codes (HUCs) item by id

# paths./collections/hydrologic-unit-codes/items/{featureId}.options.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/hydrologic-unit-codes/items/{featureId}.options.summary
Options for Hydrologic unit codes (HUCs) item by id

# paths./collections/hydrologic-unit-codes/queryables.get.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/hydrologic-unit-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/hydrologic-unit-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/hydrologic-unit-codes/queryables.get.summary
Get Hydrologic unit codes (HUCs) queryables

# paths./collections/hydrologic-unit-codes/schema.get.description
Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

# paths./collections/latest-continuous.get.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-continuous/items.get.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-continuous/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/latest-continuous/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/latest-continuous/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/latest-continuous/items.get.parameters[].description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-continuous/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-continuous/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-continuous/items.get.parameters[].description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/latest-continuous/items.get.parameters[].description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/latest-continuous/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/latest-continuous/items.get.parameters[].description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/latest-continuous/items.get.parameters[].description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/latest-continuous/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/latest-continuous/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/latest-continuous/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/latest-continuous/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/latest-continuous/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/latest-continuous/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/latest-continuous/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/latest-continuous/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/latest-continuous/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/latest-continuous/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-continuous/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-continuous/items.get.parameters[].description
The time interval threshold used for gap detection in the time series.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The time interval threshold used for gap detection in the time series.

# paths./collections/latest-continuous/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/latest-continuous/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/latest-continuous/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/latest-continuous/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-continuous/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/latest-continuous/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/latest-continuous/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/latest-continuous/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-continuous/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/latest-continuous/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/latest-continuous/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/latest-continuous/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/latest-continuous/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-continuous/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-continuous/items.options.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-continuous/items.post.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-continuous/items/{featureId}.get.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-continuous/items/{featureId}.options.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-continuous/items/{featureId}.options.summary
Options for Latest continuous item by id

# paths./collections/latest-continuous/queryables.get.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-continuous/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/latest-continuous/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/latest-continuous/schema.get.description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# paths./collections/latest-daily.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-daily/items.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-daily/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/latest-daily/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/latest-daily/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/latest-daily/items.get.parameters[].description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].schema.description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].schema.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-daily/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/latest-daily/items.get.parameters[].description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/latest-daily/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/latest-daily/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/latest-daily/items.get.parameters[].description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/latest-daily/items.get.parameters[].schema.description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/latest-daily/items.get.parameters[].description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/latest-daily/items.get.parameters[].schema.description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/latest-daily/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/latest-daily/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/latest-daily/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/latest-daily/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/latest-daily/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/latest-daily/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/latest-daily/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/latest-daily/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/latest-daily/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/latest-daily/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/latest-daily/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/latest-daily/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/latest-daily/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/latest-daily/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/latest-daily/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/latest-daily/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/latest-daily/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-daily/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-daily/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-daily/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-daily/items.get.parameters[].description
The time interval threshold used for gap detection in the time series.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The time interval threshold used for gap detection in the time series.

# paths./collections/latest-daily/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/latest-daily/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/latest-daily/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/latest-daily/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/latest-daily/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-daily/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/latest-daily/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/latest-daily/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/latest-daily/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/latest-daily/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/latest-daily/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/latest-daily/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/latest-daily/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-daily/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-daily/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-daily/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-daily/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/latest-daily/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/latest-daily/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/latest-daily/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/latest-daily/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/latest-daily/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/latest-daily/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/latest-daily/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-daily/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-daily/items.options.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-daily/items.post.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-daily/items/{featureId}.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-daily/items/{featureId}.options.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-daily/items/{featureId}.options.summary
Options for Latest daily values item by id

# paths./collections/latest-daily/queryables.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-daily/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/latest-daily/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/latest-daily/schema.get.description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# paths./collections/latest-field-measurements.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/latest-field-measurements/items.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/latest-field-measurements/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A unique identifier representing a single collection series. This corresponds to the `id` field in the `field-measurements-metadata` endpoint. Collection series are defined as the set of field measurements at a given monitoring location for a single parameter code using a single reading type.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A unique identifier representing a single collection series. This corresponds to the `id` field in the `field-measurements-metadata` endpoint. Collection series are defined as the set of field measurements at a given monitoring location for a single parameter code using a single reading type.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A universally unique identifier (UUID) for the field visit. Multiple measurements may be made during a single field visit.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A universally unique identifier (UUID) for the field visit. Multiple measurements may be made during a single field visit.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A short code corresponding to the observing procedure for the field measurement.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A short code corresponding to the observing procedure for the field measurement.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Water measurement or water-quality observing procedure descriptions.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Water measurement or water-quality observing procedure descriptions.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/latest-field-measurements/items.get.parameters[].description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Some of the data that you have obtained from this U.S. Geological Survey database may not have received Director's approval.  Any such data values are qualified as provisional and are subject to revision.  Provisional data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use. This field reflects the approval status of each record, and is either "Approved", meaining processing review has been completed and the data is approved for publication, or "Provisional" and subject to revision. For more information about provisional data, go to [https://waterdata.usgs.gov/provisional-data-statement/](https://waterdata.usgs.gov/provisional-data-statement/).

# paths./collections/latest-field-measurements/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The state of the control feature at the time of observation.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The state of the control feature at the time of observation.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A qualitative estimate of the quality of a measurement.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A qualitative estimate of the quality of a measurement.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The calendar year the field measurement was taken.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The calendar year the field measurement was taken.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The calendar month the field measurement was taken. If null, the month is unknown.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The calendar month the field measurement was taken. If null, the month is unknown.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The day of the month the field measurement was taken. If null, the day is unknown.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The day of the month the field measurement was taken. If null, the day is unknown.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The time of day the field measurement was taken. If null, the time of day is unknown.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The time of day the field measurement was taken. If null, the time of day is unknown.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/latest-field-measurements/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-field-measurements/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/latest-field-measurements/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/latest-field-measurements/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/latest-field-measurements/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/latest-field-measurements/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/latest-field-measurements/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/latest-field-measurements/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-field-measurements/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/latest-field-measurements/items.options.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/latest-field-measurements/items.options.summary
Options for Latest field measurements items

# paths./collections/latest-field-measurements/items.post.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/latest-field-measurements/items.post.summary
Get Latest field measurements items with CQL2

# paths./collections/latest-field-measurements/items/{featureId}.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/latest-field-measurements/items/{featureId}.get.summary
Get Latest field measurements item by id

# paths./collections/latest-field-measurements/items/{featureId}.options.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/latest-field-measurements/items/{featureId}.options.summary
Options for Latest field measurements item by id

# paths./collections/latest-field-measurements/queryables.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/latest-field-measurements/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/latest-field-measurements/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/latest-field-measurements/queryables.get.summary
Get Latest field measurements queryables

# paths./collections/latest-field-measurements/schema.get.description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# paths./collections/medium-codes.get.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/medium-codes/items.get.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/medium-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/medium-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/medium-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/medium-codes/items.get.parameters[].description
The medium code is the 3-character alpha code that identifies the material type and quality-assurance type of the sample. The first character of the code is the \"super\" medium, which describes the primary matrix of the sample. The second character is the sub-medium, which characterizes the sample type as a unique entity within the \"super\" medium category. The third character is used to designate whether a sample is an environmental or QC sample. A blank in position three denotes an environmental sample; a \"Q\" in position three denotes a QC sample.

# paths./collections/medium-codes/items.get.parameters[].schema.description
The medium code is the 3-character alpha code that identifies the material type and quality-assurance type of the sample. The first character of the code is the \"super\" medium, which describes the primary matrix of the sample. The second character is the sub-medium, which characterizes the sample type as a unique entity within the \"super\" medium category. The third character is used to designate whether a sample is an environmental or QC sample. A blank in position three denotes an environmental sample; a \"Q\" in position three denotes a QC sample.

# paths./collections/medium-codes/items.get.parameters[].description
The medium name is a short identifying appellation that explains the associated medium code. See qwmed for examples of codes, names, and descriptions.

# paths./collections/medium-codes/items.get.parameters[].schema.description
The medium name is a short identifying appellation that explains the associated medium code. See qwmed for examples of codes, names, and descriptions.

# paths./collections/medium-codes/items.get.parameters[].description
The medium description is a short string of words that explains the associated medium code. See qwmed for examples of codes, names, and descriptions.

# paths./collections/medium-codes/items.get.parameters[].schema.description
The medium description is a short string of words that explains the associated medium code. See qwmed for examples of codes, names, and descriptions.

# paths./collections/medium-codes/items.get.parameters[].description
Historical 1-char medium code that corresponds to the 3-char code.

# paths./collections/medium-codes/items.get.parameters[].schema.description
Historical 1-char medium code that corresponds to the 3-char code.

# paths./collections/medium-codes/items.options.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/medium-codes/items.post.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/medium-codes/items/{featureId}.get.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/medium-codes/items/{featureId}.options.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/medium-codes/queryables.get.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/medium-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/medium-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/medium-codes/schema.get.description
Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

# paths./collections/method-categories.get.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-categories/items.get.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-categories/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/method-categories/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/method-categories/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/method-categories/items.get.parameters[].description
Code representing the method category standard.

# paths./collections/method-categories/items.get.parameters[].schema.description
Code representing the method category standard.

# paths./collections/method-categories/items.get.parameters[].description
Name representing the method category standard.

# paths./collections/method-categories/items.get.parameters[].schema.description
Name representing the method category standard.

# paths./collections/method-categories/items.get.parameters[].description
Full description of the method category as defined by the USGS Water Mission Area standards for field and analytical methods and their fit-for-purpose use internally and for public delivery

# paths./collections/method-categories/items.get.parameters[].schema.description
Full description of the method category as defined by the USGS Water Mission Area standards for field and analytical methods and their fit-for-purpose use internally and for public delivery

# paths./collections/method-categories/items.options.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-categories/items.post.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-categories/items/{featureId}.get.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-categories/items/{featureId}.options.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-categories/items/{featureId}.options.summary
Options for Method categories item by id

# paths./collections/method-categories/queryables.get.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-categories/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/method-categories/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/method-categories/schema.get.description
Categorical standards for methods describing the associated data's appropriateness for an intended use.

# paths./collections/method-citations.get.description
Citation identifiers for water measurement methods.

# paths./collections/method-citations/items.get.description
Citation identifiers for water measurement methods.

# paths./collections/method-citations/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/method-citations/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/method-citations/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/method-citations/items.get.parameters[].description
USGS Central Laboratory method code. The lab method used to determine a parameter value.

# paths./collections/method-citations/items.get.parameters[].schema.description
USGS Central Laboratory method code. The lab method used to determine a parameter value.

# paths./collections/method-citations/items.get.parameters[].description
Method citation name. An abbreviated citation that describes the reference.

# paths./collections/method-citations/items.get.parameters[].schema.description
Method citation name. An abbreviated citation that describes the reference.

# paths./collections/method-citations/items.get.parameters[].description
Citation method number. A number assigned to a method within a cited reference.

# paths./collections/method-citations/items.get.parameters[].schema.description
Citation method number. A number assigned to a method within a cited reference.

# paths./collections/method-citations/items.options.description
Citation identifiers for water measurement methods.

# paths./collections/method-citations/items.post.description
Citation identifiers for water measurement methods.

# paths./collections/method-citations/items/{featureId}.get.description
Citation identifiers for water measurement methods.

# paths./collections/method-citations/items/{featureId}.options.description
Citation identifiers for water measurement methods.

# paths./collections/method-citations/queryables.get.description
Citation identifiers for water measurement methods.

# paths./collections/method-citations/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/method-citations/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/method-citations/schema.get.description
Citation identifiers for water measurement methods.

# paths./collections/methods.get.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/methods/items.get.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/methods/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/methods/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/methods/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/methods/items.get.parameters[].description
Water measurement or water-quality analytical method code. The method used to determine a parameter value.

# paths./collections/methods/items.get.parameters[].schema.description
Water measurement or water-quality analytical method code. The method used to determine a parameter value.

# paths./collections/methods/items.get.parameters[].description
Method type for measured or collected data

# paths./collections/methods/items.get.parameters[].schema.description
Method type for measured or collected data

# paths./collections/methods/items.get.parameters[].description
Code representing the method category standard.

# paths./collections/methods/items.get.parameters[].schema.description
Code representing the method category standard.

# paths./collections/methods/items.get.parameters[].description
A short name that partially describes a method.

# paths./collections/methods/items.get.parameters[].schema.description
A short name that partially describes a method.

# paths./collections/methods/items.get.parameters[].description
A long name that fully describes a method.

# paths./collections/methods/items.get.parameters[].schema.description
A long name that fully describes a method.

# paths./collections/methods/items.options.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/methods/items.options.summary
Options for Water measurement methods items

# paths./collections/methods/items.post.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/methods/items.post.summary
Get Water measurement methods items with CQL2

# paths./collections/methods/items/{featureId}.get.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/methods/items/{featureId}.get.summary
Get Water measurement methods item by id

# paths./collections/methods/items/{featureId}.options.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/methods/items/{featureId}.options.summary
Options for Water measurement methods item by id

# paths./collections/methods/queryables.get.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/methods/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/methods/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/methods/queryables.get.summary
Get Water measurement methods queryables

# paths./collections/methods/schema.get.description
Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

# paths./collections/monitoring-locations.get.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/monitoring-locations/items.get.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/monitoring-locations/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/monitoring-locations/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/monitoring-locations/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/monitoring-locations/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `monitoring_location_id` field in other endpoints. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `monitoring_location_id` field in other endpoints. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/monitoring-locations/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/monitoring-locations/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/monitoring-locations/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/monitoring-locations/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/monitoring-locations/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/monitoring-locations/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/monitoring-locations/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/monitoring-locations/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/monitoring-locations/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/monitoring-locations/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/monitoring-locations/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/monitoring-locations/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/monitoring-locations/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/monitoring-locations/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/monitoring-locations/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/monitoring-locations/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/monitoring-locations/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/monitoring-locations/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/monitoring-locations/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/monitoring-locations/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/monitoring-locations/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/monitoring-locations/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/monitoring-locations/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/monitoring-locations/items.get.parameters[].description
Approved water data are considered published record, but on occasion changes or deletions (revisions) must be made to data after they are approved. Data revisions are rare because of USGS quality assurance practices, including documentation of all data before they are officially approved. This field contains text explanations for data revisions at this monitoring location. Changes to data also are indicated with revision qualifier codes alongside the data. Text explanations before 2017 are not necessarily available online, but can be requested.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
Approved water data are considered published record, but on occasion changes or deletions (revisions) must be made to data after they are approved. Data revisions are rare because of USGS quality assurance practices, including documentation of all data before they are officially approved. This field contains text explanations for data revisions at this monitoring location. Changes to data also are indicated with revision qualifier codes alongside the data. Text explanations before 2017 are not necessarily available online, but can be requested.

# paths./collections/monitoring-locations/items.get.parameters[].description
The date a revision statement was created.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The date a revision statement was created.

# paths./collections/monitoring-locations/items.get.parameters[].description
The most recent date a revision statement was modified.

# paths./collections/monitoring-locations/items.get.parameters[].schema.description
The most recent date a revision statement was modified.

# paths./collections/monitoring-locations/items.options.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/monitoring-locations/items.post.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/monitoring-locations/items.post.summary
Get Monitoring locations items with CQL2

# paths./collections/monitoring-locations/items/{featureId}.get.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/monitoring-locations/items/{featureId}.options.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/monitoring-locations/items/{featureId}.options.summary
Options for Monitoring locations item by id

# paths./collections/monitoring-locations/queryables.get.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/monitoring-locations/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/monitoring-locations/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/monitoring-locations/schema.get.description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# paths./collections/national-aquifer-codes.get.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/national-aquifer-codes/items.get.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/national-aquifer-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/national-aquifer-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/national-aquifer-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/national-aquifer-codes/items.options.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/national-aquifer-codes/items.options.summary
Options for National aquifer codes items

# paths./collections/national-aquifer-codes/items.post.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/national-aquifer-codes/items.post.summary
Get National aquifer codes items with CQL2

# paths./collections/national-aquifer-codes/items/{featureId}.get.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/national-aquifer-codes/items/{featureId}.options.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/national-aquifer-codes/items/{featureId}.options.summary
Options for National aquifer codes item by id

# paths./collections/national-aquifer-codes/queryables.get.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/national-aquifer-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/national-aquifer-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/national-aquifer-codes/schema.get.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

# paths./collections/parameter-codes.get.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/parameter-codes/items.get.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/parameter-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/parameter-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/parameter-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/parameter-codes/items.get.parameters[].description
Parameter reporting units defined to cooperate with descriptions by USEPA.

# paths./collections/parameter-codes/items.get.parameters[].schema.description
Parameter reporting units defined to cooperate with descriptions by USEPA.

# paths./collections/parameter-codes/items.get.parameters[].description
Categorical groupings of parameters by water-quality data type for display and report ordering

# paths./collections/parameter-codes/items.get.parameters[].schema.description
Categorical groupings of parameters by water-quality data type for display and report ordering

# paths./collections/parameter-codes/items.get.parameters[].description
Indicates the relationship of the USGS parameter code to the EPA code.

# paths./collections/parameter-codes/items.get.parameters[].schema.description
Indicates the relationship of the USGS parameter code to the EPA code.

# paths./collections/parameter-codes/items.options.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/parameter-codes/items.post.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/parameter-codes/items/{featureId}.get.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/parameter-codes/items/{featureId}.options.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/parameter-codes/queryables.get.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/parameter-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/parameter-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/parameter-codes/schema.get.description
Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

# paths./collections/peaks.get.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/peaks/items.get.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/peaks/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/peaks/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/peaks/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/peaks/items.get.parameters[].description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
A unique identifier representing a single time series. This corresponds to the `id` field in the `time-series-metadata` endpoint.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/peaks/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/peaks/items.get.parameters[].description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/peaks/items.get.parameters[].schema.description
The value of the observation. Values are transmitted as strings in the JSON response format in order to preserve precision.

# paths./collections/peaks/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/peaks/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/peaks/items.get.parameters[].description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/peaks/items.get.parameters[].schema.description
The date an observation represents. You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `time` that intersects the value of datetime are selected. If a feature has multiple temporal properties, it is the decision of the server whether only a single temporal property is used to determine the extent or all relevant temporal properties.

# paths./collections/peaks/items.get.parameters[].description
The water year (running from October 1st to September 30th) a peak occurred.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
The water year (running from October 1st to September 30th) a peak occurred.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
The calendar year a peak occurred.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
The calendar year a peak occurred.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
The calendar month a peak occurred. If null, the month a peak occurred is unknown.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
The calendar month a peak occurred. If null, the month a peak occurred is unknown.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
The day of the month a peak occurred. If null, the day a peak occurred is unknown.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
The day of the month a peak occurred. If null, the day a peak occurred is unknown.
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
The time of day a peak occurred. If null, the time of day a peak occurred is unknown.

# paths./collections/peaks/items.get.parameters[].schema.description
The time of day a peak occurred. If null, the time of day a peak occurred is unknown.

# paths./collections/peaks/items.get.parameters[].description
If not null, this record represents the peak value for the parameter code since the year contained in "peak_since".
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].schema.description
If not null, this record represents the peak value for the parameter code since the year contained in "peak_since".
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/peaks/items.get.parameters[].description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/peaks/items.get.parameters[].schema.description
This field indicates any qualifiers associated with an observation, for instance if a sensor may have been impacted by ice or if values were estimated.

# paths./collections/peaks/items.get.parameters[].description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/peaks/items.get.parameters[].schema.description
The agency that is reporting the data. Agency codes are fixed values assigned by the National Water Information System (NWIS). A list of agency codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/agency-codes/items).

# paths./collections/peaks/items.get.parameters[].description
The name of the agency that is reporting the data.

# paths./collections/peaks/items.get.parameters[].schema.description
The name of the agency that is reporting the data.

# paths./collections/peaks/items.get.parameters[].description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/peaks/items.get.parameters[].schema.description
Altitude of the monitoring location referenced to the specified Vertical Datum.

# paths./collections/peaks/items.get.parameters[].description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/peaks/items.get.parameters[].schema.description
Accuracy of the altitude, in feet. An accuracy of +/- 0.1 foot would be entered as “.1”. Many altitudes are interpolated from the contours on topographic maps; accuracies determined in this way are generally entered as one-half of the contour interval.

# paths./collections/peaks/items.get.parameters[].description
Codes representing the method used to measure altitude.

# paths./collections/peaks/items.get.parameters[].schema.description
Codes representing the method used to measure altitude.

# paths./collections/peaks/items.get.parameters[].description
The name of the method used to measure altitude.

# paths./collections/peaks/items.get.parameters[].schema.description
The name of the method used to measure altitude.

# paths./collections/peaks/items.get.parameters[].description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/peaks/items.get.parameters[].schema.description
Local aquifers in the USGS water resources data base are identified by a geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name).

# paths./collections/peaks/items.get.parameters[].description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/peaks/items.get.parameters[].schema.description
Describes the confinement status of an aquifer at the monitoring location. A confined aquifer is an aquifer below the land surface that is saturated with water. A water table--or unconfined--aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

# paths./collections/peaks/items.get.parameters[].description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].schema.description
The Basin Code or "drainage basin code" is a two-digit code that further subdivides the 8-digit hydrologic-unit code. The drainage basin code is defined by the USGS State Office where the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/peaks/items.get.parameters[].schema.description
The contributing drainage area of a lake, stream, wetland, or estuary monitoring location, in square miles. This item should be present only if the contributing area is different from the total drainage area. This situation can occur when part of the drainage area consists of very porous soil or depressions that either allow all runoff to enter the groundwater or traps the water in ponds so that rainfall does not contribute to runoff. A transbasin diversion can also affect the total drainage area.

# paths./collections/peaks/items.get.parameters[].description
The code for the country in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].schema.description
The code for the country in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].description
The name of the country in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].schema.description
The name of the country in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/peaks/items.get.parameters[].schema.description
The code for the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/peaks/items.get.parameters[].description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/peaks/items.get.parameters[].schema.description
The name of the county or county equivalent (parish, borough, etc.) in which the monitoring location is located. [A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/counties/items).

# paths./collections/peaks/items.get.parameters[].description
The time interval threshold used for gap detection in the time series.

# paths./collections/peaks/items.get.parameters[].schema.description
The time interval threshold used for gap detection in the time series.

# paths./collections/peaks/items.get.parameters[].description
A code indicating the source of water-level data.

# paths./collections/peaks/items.get.parameters[].schema.description
A code indicating the source of water-level data.

# paths./collections/peaks/items.get.parameters[].description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/peaks/items.get.parameters[].schema.description
The Water Science Centers (WSCs) across the United States use the FIPS state code as the district code. In some case, monitoring locations and samples may be managed by a water science center that is adjacent to the state in which the monitoring location actually resides. For example a monitoring location may have a district code of 30 which translates to Montana, but the state code could be 56 for Wyoming because that is where the monitoring location actually is located.

# paths./collections/peaks/items.get.parameters[].description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/peaks/items.get.parameters[].schema.description
The area enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above that point.

# paths./collections/peaks/items.get.parameters[].description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/peaks/items.get.parameters[].schema.description
The total depth to which the hole is drilled, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Hole Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/peaks/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/peaks/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/peaks/items.get.parameters[].description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].schema.description
Codes for primary governmental or administrative divisions of the county or county equivalent in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/peaks/items.get.parameters[].schema.description
This is the official name of the monitoring location in the database. For well information this can be a district-assigned local number.

# paths./collections/peaks/items.get.parameters[].description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/peaks/items.get.parameters[].schema.description
Each monitoring location in the USGS data base has a unique 8- to 15-digit identification number.

# paths./collections/peaks/items.get.parameters[].description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/peaks/items.get.parameters[].schema.description
National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water. Not all groundwater monitoring locations can be associated with a National Aquifer. Such monitoring locations will not be retrieved using this search criteria. A list of National aquifer codes and names is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/national-aquifer-codes/items).

# paths./collections/peaks/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/peaks/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/peaks/items.get.parameters[].description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/peaks/items.get.parameters[].schema.description
Coordinates are published in EPSG:4326 / WGS84 / World Geodetic System 1984. This field indicates the original datum used to determine coordinates before they were converted. A list of codes is available at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/coordinate-datum-codes/items).

# paths./collections/peaks/items.get.parameters[].description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/peaks/items.get.parameters[].schema.description
State code. A [two-digit ANSI code](https://www2.census.gov/geo/docs/reference/state.txt) (formerly FIPS code) as defined by the American National Standards Institute, to define States and equivalents. A three-digit ANSI code is used to define counties and county equivalents. [A lookup table is available.](https://www.census.gov/library/reference/code-lists/ansi.html#states) The only countries with political subdivisions other than the US are Mexico and Canada. The Mexican states have US state codes ranging from 81-86 and Canadian provinces have state codes ranging from 90-98.

# paths./collections/peaks/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/peaks/items.get.parameters[].description
A short code describing the time zone used by a monitoring location.

# paths./collections/peaks/items.get.parameters[].schema.description
A short code describing the time zone used by a monitoring location.

# paths./collections/peaks/items.get.parameters[].description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/peaks/items.get.parameters[].schema.description
A flag indicating whether or not a monitoring location uses daylight savings.

# paths./collections/peaks/items.get.parameters[].description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/peaks/items.get.parameters[].schema.description
The depth of the finished well, in feet below land surface datum. Note: Not all groundwater monitoring locations have information on Well Depth. Such monitoring locations will not be retrieved using this search criteria.

# paths./collections/peaks/items.options.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/peaks/items.post.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/peaks/items/{featureId}.get.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/peaks/items/{featureId}.options.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/peaks/queryables.get.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/peaks/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/peaks/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/peaks/schema.get.description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# paths./collections/reliability-codes.get.description
Code indicating the reliability of the data available for the site.

# paths./collections/reliability-codes/items.get.description
Code indicating the reliability of the data available for the site.

# paths./collections/reliability-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/reliability-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/reliability-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/reliability-codes/items.options.description
Code indicating the reliability of the data available for the site.

# paths./collections/reliability-codes/items.post.description
Code indicating the reliability of the data available for the site.

# paths./collections/reliability-codes/items/{featureId}.get.description
Code indicating the reliability of the data available for the site.

# paths./collections/reliability-codes/items/{featureId}.options.description
Code indicating the reliability of the data available for the site.

# paths./collections/reliability-codes/items/{featureId}.options.summary
Options for Reliability codes item by id

# paths./collections/reliability-codes/queryables.get.description
Code indicating the reliability of the data available for the site.

# paths./collections/reliability-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/reliability-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/reliability-codes/schema.get.description
Code indicating the reliability of the data available for the site.

# paths./collections/site-types.get.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/site-types/items.get.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/site-types/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/site-types/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/site-types/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/site-types/items.get.parameters[].description
An acronym specifying the primary or secondary site type.

# paths./collections/site-types/items.get.parameters[].schema.description
An acronym specifying the primary or secondary site type.

# paths./collections/site-types/items.get.parameters[].description
Identifies which site types are primary.

# paths./collections/site-types/items.get.parameters[].schema.description
Identifies which site types are primary.

# paths./collections/site-types/items.get.parameters[].description
A long name for the site type used in retrieved output.

# paths./collections/site-types/items.get.parameters[].schema.description
A long name for the site type used in retrieved output.

# paths./collections/site-types/items.options.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/site-types/items.post.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/site-types/items/{featureId}.get.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/site-types/items/{featureId}.options.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/site-types/queryables.get.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/site-types/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/site-types/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/site-types/schema.get.description
The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

# paths./collections/states.get.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/states/items.get.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/states/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/states/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/states/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/states/items.get.parameters[].description
FIPS country code as defined by FIPS PUB 10-4: Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions.

# paths./collections/states/items.get.parameters[].schema.description
FIPS country code as defined by FIPS PUB 10-4: Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions.

# paths./collections/states/items.get.parameters[].description
State postal abbreviation. A two-letter USPS state postal abbreviation.

# paths./collections/states/items.get.parameters[].schema.description
State postal abbreviation. A two-letter USPS state postal abbreviation.

# paths./collections/states/items.options.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/states/items.post.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/states/items/{featureId}.get.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/states/items/{featureId}.options.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/states/items/{featureId}.options.summary
Options for State identifiers item by id

# paths./collections/states/queryables.get.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/states/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/states/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/states/schema.get.description
State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

# paths./collections/statistic-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/statistic-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/statistic-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/statistic-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/statistic-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/time-series-metadata.get.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-series-metadata/items.get.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-series-metadata/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/time-series-metadata/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10).

# paths./collections/time-series-metadata/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/time-series-metadata/items.get.parameters[].description
A unique identifier representing a single time series. This corresponds to the "time_series_id" field in other endpoints. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
A unique identifier representing a single time series. This corresponds to the "time_series_id" field in other endpoints. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
A human-readable description of the units of measurement associated with an observation.

# paths./collections/time-series-metadata/items.get.parameters[].description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
Parameter codes are 5-digit codes used to identify the constituent measured and the units of measure. A complete list of parameter codes and associated groupings can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/parameter-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
A code corresponding to the statistic an observation represents. Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete list of codes and their descriptions can be found at [https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items](https://api.waterdata.usgs.gov/ogcapi/v0/collections/statistic-codes/items).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
The hydrologic unit code (HUC) for the monitoring location. Supports prefix matching — querying with a shorter HUC (e.g. "04") matches all locations within that hydrologic region.
 Search will match partial HUCs.

# paths./collections/time-series-metadata/items.get.parameters[].description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
The name of the state or state equivalent in which the monitoring location is located.

# paths./collections/time-series-metadata/items.get.parameters[].description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
The last time a record was refreshed in our database. This may happen due to regular operational processes and does not necessarily indicate anything about the measurement has changed.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `last_modified` that intersects the value of datetime are selected.

# paths./collections/time-series-metadata/items.get.parameters[].description
This field contains the same information as "begin_utc", but in the local time of the monitoring location. It is retained for backwards compatibility, but will be removed in V1 of these APIs.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
This field contains the same information as "begin_utc", but in the local time of the monitoring location. It is retained for backwards compatibility, but will be removed in V1 of these APIs.

# paths./collections/time-series-metadata/items.get.parameters[].schema.title
Time series first observation timestamp - local time

# paths./collections/time-series-metadata/items.get.parameters[].description
This field contains the same information as "end_utc", but in the local time of the monitoring location. It is retained for backwards compatibility, but will be removed in V1 of these APIs.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
This field contains the same information as "end_utc", but in the local time of the monitoring location. It is retained for backwards compatibility, but will be removed in V1 of these APIs.

# paths./collections/time-series-metadata/items.get.parameters[].schema.title
Time series most recent observation timestamp - local time

# paths./collections/time-series-metadata/items.get.parameters[].description
The datetime of the earliest observation in the time series. Together with `end_utc`, this field represents the period of record of a time series. Note that some time series may have large gaps in their collection record.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `begin_utc` that intersects the value of datetime are selected.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
The datetime of the earliest observation in the time series. Together with `end_utc`, this field represents the period of record of a time series. Note that some time series may have large gaps in their collection record.
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `begin_utc` that intersects the value of datetime are selected.

# paths./collections/time-series-metadata/items.get.parameters[].schema.title
Time series first observation timestamp - UTC

# paths./collections/time-series-metadata/items.get.parameters[].description
The datetime of the most recent observation in the time series. Data returned by this endpoint updates at most once per day, and potentially less frequently than that, and as such there may be more recent observations within a time series than the time series `end_utc` value reflects. Together with `begin_utc`, this field represents the period of record of a time series. It is additionally used to determine whether a time series is "active".
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `end_utc` that intersects the value of datetime are selected.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
The datetime of the most recent observation in the time series. Data returned by this endpoint updates at most once per day, and potentially less frequently than that, and as such there may be more recent observations within a time series than the time series `end_utc` value reflects. Together with `begin_utc`, this field represents the period of record of a time series. It is additionally used to determine whether a time series is "active".
You can query this field using date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration objects. Intervals may be bounded or half-bounded (double-dots at start or end).
Examples:

  - A date-time: "2018-02-12T23:20:50Z"
  - A bounded interval: "2018-02-12T00:00:00Z/2018-03-18T12:31:12Z"
  - Half-bounded intervals: "2018-02-12T00:00:00Z/.." or "../2018-03-18T12:31:12Z"
  - Duration objects: "P1M" for data from the past month or "PT36H" for the last 36 hours

Only features that have a `end_utc` that intersects the value of datetime are selected.

# paths./collections/time-series-metadata/items.get.parameters[].schema.title
Time series most recent observation timestamp - UTC

# paths./collections/time-series-metadata/items.get.parameters[].description
Indicates the period of data used for any statistical computations. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
Indicates the period of data used for any statistical computations. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].description
Indicates the computation performed to calculate this time series. Values of "Instantaneous" reflect point measurements. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
Indicates the computation performed to calculate this time series. Values of "Instantaneous" reflect point measurements. Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].description
Thresholds represent known numeric limits for a time series, for example the historic maximum value for a parameter or a level below which a sensor is non-operative. These thresholds are sometimes used to automatically determine if an observation is erroneous due to sensor error, and therefore shouldn't be included in the time series.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
Thresholds represent known numeric limits for a time series, for example the historic maximum value for a parameter or a level below which a sensor is non-operative. These thresholds are sometimes used to automatically determine if an observation is erroneous due to sensor error, and therefore shouldn't be included in the time series.

# paths./collections/time-series-metadata/items.get.parameters[].description
An optional human-readable identifier used to specify where measurements are recorded at a monitoring location.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
An optional human-readable identifier used to specify where measurements are recorded at a monitoring location.

# paths./collections/time-series-metadata/items.get.parameters[].description
A flag identifying if the time series is a "primary" time series. "Primary" time series (which have this flag) are standard observations which undergo [Bureau review and approval processes](https://www.usgs.gov/survey-manual/5028-fundamental-science-practices-review-and-approval-scientific-data-release). Non-primary time series, which will have missing values for "primary", are provisional datasets made available to meet the need for timely best science and to assist with daily operations which need real-time information. Non-primary time series data are only retained by this system for 120 days. See the [USGS Provisional Data Statement](https://waterdata.usgs.gov/provisional-data-statement/) for more information.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
A flag identifying if the time series is a "primary" time series. "Primary" time series (which have this flag) are standard observations which undergo [Bureau review and approval processes](https://www.usgs.gov/survey-manual/5028-fundamental-science-practices-review-and-approval-scientific-data-release). Non-primary time series, which will have missing values for "primary", are provisional datasets made available to meet the need for timely best science and to assist with daily operations which need real-time information. Non-primary time series data are only retained by this system for 120 days. See the [USGS Provisional Data Statement](https://waterdata.usgs.gov/provisional-data-statement/) for more information.

# paths./collections/time-series-metadata/items.get.parameters[].description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
A unique identifier representing a single monitoring location. This corresponds to the `id` field in the `monitoring-locations` endpoint. Monitoring location IDs are created by combining the agency code of the agency responsible for the monitoring location (e.g. USGS) with the ID number of the monitoring location (e.g. 02238500), separated by a hyphen (e.g. USGS-02238500).
 Split parameters are enabled for this field, so you can supply multiple values separated by commas.

# paths./collections/time-series-metadata/items.get.parameters[].description
An optional description of the time series. WDFN and other USGS data dissemination products use this field, in combination with sublocation_identifier, to distinguish the differences between multiple time series for the same parameter code, statistic code, and monitoring location.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
An optional description of the time series. WDFN and other USGS data dissemination products use this field, in combination with sublocation_identifier, to distinguish the differences between multiple time series for the same parameter code, statistic code, and monitoring location.

# paths./collections/time-series-metadata/items.get.parameters[].description
A description of what the parameter code represents, as used by WDFN and other USGS data dissemination products.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
A description of what the parameter code represents, as used by WDFN and other USGS data dissemination products.

# paths./collections/time-series-metadata/items.get.parameters[].description
The unique identifier representing the parent or "upchain" time series that a daily values time series is generated from. Daily values time series have one and only one parent time series.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
The unique identifier representing the parent or "upchain" time series that a daily values time series is generated from. Daily values time series have one and only one parent time series.

# paths./collections/time-series-metadata/items.get.parameters[].description
The time interval threshold used for gap detection in the time series.

# paths./collections/time-series-metadata/items.get.parameters[].schema.description
The time interval threshold used for gap detection in the time series.

# paths./collections/time-series-metadata/items.options.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-series-metadata/items.post.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-series-metadata/items.post.summary
Get Time series metadata items with CQL2

# paths./collections/time-series-metadata/items/{featureId}.get.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-series-metadata/items/{featureId}.options.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-series-metadata/items/{featureId}.options.summary
Options for Time series metadata item by id

# paths./collections/time-series-metadata/queryables.get.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-series-metadata/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/time-series-metadata/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/time-series-metadata/schema.get.description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# paths./collections/time-zone-codes.get.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/time-zone-codes/items.get.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/time-zone-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/time-zone-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/time-zone-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/time-zone-codes/items.get.parameters[].description
Time zone name. An English name for a world time zone.

# paths./collections/time-zone-codes/items.get.parameters[].schema.description
Time zone name. An English name for a world time zone.

# paths./collections/time-zone-codes/items.get.parameters[].description
Coordinated Universal Time (UTC) offset time. The number of hours offset from UTC time, in ISO format.

# paths./collections/time-zone-codes/items.get.parameters[].schema.description
Coordinated Universal Time (UTC) offset time. The number of hours offset from UTC time, in ISO format.

# paths./collections/time-zone-codes/items.get.parameters[].description
Daylight Saving Time offset time. The number of hours offset from UTC time when Daylight Saving Time is in effect, in ISO format.

# paths./collections/time-zone-codes/items.get.parameters[].schema.description
Daylight Saving Time offset time. The number of hours offset from UTC time when Daylight Saving Time is in effect, in ISO format.

# paths./collections/time-zone-codes/items.options.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/time-zone-codes/items.post.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/time-zone-codes/items/{featureId}.get.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/time-zone-codes/items/{featureId}.options.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/time-zone-codes/queryables.get.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/time-zone-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/time-zone-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/time-zone-codes/schema.get.description
The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.

# paths./collections/topographic-codes.get.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# paths./collections/topographic-codes/items.get.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# paths./collections/topographic-codes/items.get.parameters[].description
The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.

# paths./collections/topographic-codes/items.get.parameters[].description
The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).

# paths./collections/topographic-codes/items.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/topographic-codes/items.options.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# paths./collections/topographic-codes/items.post.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# paths./collections/topographic-codes/items/{featureId}.get.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# paths./collections/topographic-codes/items/{featureId}.options.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# paths./collections/topographic-codes/items/{featureId}.options.summary
Options for Topographic codes item by id

# paths./collections/topographic-codes/queryables.get.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# paths./collections/topographic-codes/queryables.get.parameters[].description
The properties that should be included. The parameter value is a comma-separated list of property names.

# paths./collections/topographic-codes/queryables.get.parameters[].description
The profile to be applied to a given request

# paths./collections/topographic-codes/schema.get.description
The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

# servers[].description
The United States Geological Survey (USGS) collects water data at monitoring locations across the United States using both automated sensors and manual data collection. These APIs provide access to that data, alongside metadata about data collections and monitoring locations, in standardized machine-readable formats.

# tags[].description
The United States Geological Survey (USGS) collects water data at monitoring locations across the United States using both automated sensors and manual data collection. These APIs provide access to that data, alongside metadata about data collections and monitoring locations, in standardized machine-readable formats.

# tags[].description
This endpoint provides the most recent observation for each time series of continuous data. Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code. These data might also be referred to as "instantaneous values" or "IV"

# tags[].description
Continuous data are collected via automated sensors installed at a monitoring location. They are collected at a high frequency and often at a fixed 15-minute interval. Depending on the specific monitoring location, the data may be transmitted automatically via telemetry and be available on WDFN within minutes of collection, while other times the delivery of data may be delayed if the monitoring location does not have the capacity to automatically transmit data. Continuous data are described by parameter name and parameter code (pcode). These data might also be referred to as "instantaneous values" or "IV".

# tags[].description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# tags[].description
Daily data provide one data value to represent water conditions for the day. Throughout much of the history of the USGS, the primary water data available was daily data collected manually at the monitoring location once each day. With improved availability of computer storage and automated transmission of data, the daily data published today are generally a statistical summary or metric of the continuous data collected each day, such as the daily mean, minimum, or maximum value. Daily data are automatically calculated from the continuous data of the same parameter code and are described by parameter code and a statistic code. These data have also been referred to as “daily values” or “DV”.

# tags[].description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# tags[].description
Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

# tags[].description
Channel measurements taken as part of streamflow field measurements.

# tags[].description
This endpoint combines metadata from timeseries and field measurements collections by site.

# tags[].description
This endpoint provides metadata about field measurement collections, including when the earliest and most recent observations for a parameter occurred at a monitoring location and its units.

# tags[].description
Daily data and continuous measurements are grouped into time series, which represent a collection of observations of a single parameter, potentially aggregated using a standard statistic, at a single monitoring location. This endpoint provides metadata about those time series, including their operational thresholds, units of measurement, and when the earliest and most recent observations in a time series occurred.

# tags[].description
Location information is basic information about the monitoring location including the name, identifier, agency responsible for data collection, and the date the location was established. It also includes information about the type of location, such as stream, lake, or groundwater, and geographic information about the location, such as state, county, latitude and longitude, and hydrologic unit code (HUC).

# tags[].description
Annual peak flow values are the maximum instantaneous streamflow values recorded at a particular site for the entire water year from October 1 to September 30. Note that the annual peak flow value may not occur at the same time the maximum water level occurs due to conditions such as backwater, tidal fluctuations, etc.

# tags[].description
Code identifying the agency or organization used for site information, data sources, and permitting agencies. Agency codes are fixed values assigned by the National Water Information System (NWIS).

# tags[].description
The recommended vertical datum is NAVD88 (North American Vertical Datum of 1988) where applicable as stated in Office of Information Technical Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88 are the only datums that can be converted on output. NWIS uses the North American Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical datums are not available.

# tags[].description
Local aquifers in USGS data are identified by an aquifer name and geohydrologic unit code (a three-digit number related to the age of the formation, followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name). For the age of formation (aquifer age), generally the smaller the number represents the younger the geohydrologic unit. Aquifer names and the definition of an aquifer can be very subjective. One rock unit may be called different aquifer names by different people. Local aquifers and layered aquifers are often grouped into larger named regional aquifers or aquifer systems. For example, the National Northern Atlantic Coastal Plain aquifer system (National aquifer) consists of five layered regional aquifers. Each regional aquifer is divided into two or more aquifers which may have a different name in each of the states in which the aquifer is found.

# tags[].description
Groundwater occurs in aquifers under two different conditions. Where water only partly fills an aquifer, the upper surface is free to rise and decline. These aquifers are referred to as unconfined (or water-table) aquifers. Where water completely fills an aquifer that is overlain by a confining bed, the aquifer is referred to as a confined (or artesian) aquifer. When a confined aquifer is penetrated by a well, the water level in the well will rise above the top of the aquifer (but not necessarily above land surface).

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Appropriate code on the schedule to indicate the accuracy of the latitude-longitude values.

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Horizontal datum code for the latitude/longitude coordinates. There are currently more than 300 horizontal datums available for entry.

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Methods used to determine latitude-longitude values.

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The name of the county or county equivalent (parish, borough, planning reagion, etc.) in which the site is located. List includes Census Bureau FIPS county codes, names and associated Country and State.

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Hydrologic units are geographic areas representing part or all of a surface drainage basin or distinct hydrologic feature identified by a unique number (HUC), and a name. The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit consists of two to eight digits based on the four levels of classification in the hydrologic unit system. Additional information can be found at &lthttps://water.usgs.gov/GIS/huc.html&gt.

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Medium refers to the specific environmental medium from which the sample was collected. Medium type differs from site type because one site type, such as surface water, could have data for several media, such as water, bottom sediment, fish tissue, and others.

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Water measurement or water-quality analytical methods. Codes and descriptions defining a method for calculating or measuring the value of a water quality or quantity parameter. Method codes are associated with one or many parameter codes.

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Categorical standards for methods describing the associated data's appropriateness for an intended use.

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Citation identifiers for water measurement methods.

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Citations associated with water measurement methods.

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National aquifers are the principal aquifers or aquifer systems in the United States, defined as regionally extensive aquifers or aquifer systems that have the potential to be used as a source of potable water.

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Parameter codes are 5-digit codes and associated descriptions used to identify the constituent measured and the units of measure. Some parameter code definitions include information about the sampling matrix, fraction, and methods used to measure the constituent. Some parameters are fixed-value (fxd) numeric codes having textual meaning (for example: parameter code 00041 is a weather code parameter, code of 60 means rain), but more commonly represent a numeric value for chemical, physical, or biological data.

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Code indicating the reliability of the data available for the site.

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The hydrologic cycle setting or a man-made feature thought to affect the hydrologic conditions measured at a site. Primary and secondary site types associated with data collection sites. All sites have a primary site type, and may additionally have a secondary site type that further describes the location.

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State name or territory. Includes U.S. states and foreign entities classified under FIPS as 'Principal Administrative Divisions'.

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The code that best describes the topographic setting in which the site is located. Topographic setting refers to the geomorphic features in the vicinity of the site.

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The ISO 8601 standard defines time zone offsets as a numerical value added to a local time to convert it to Coordinated Universal Time (UTC), either as +hh:mm or -hh:mm, or represented by the letter Z to explicitly indicate UTC. For example, +05:30 means 5 hours and 30 minutes ahead of UTC, while -08:00 means 8 hours behind UTC. The offset Z specifically signifies UTC.