Medium codes
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.
metadata features
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Browse the data
Explore medium codes observations in your browser! Requests made in a browser will default to returning HTML responses; add
f=jsonto your query to always get the JSON response. -
Read the docs
The OpenAPI documentation lists available query parameters and has a helpful query-builder interface you can use to bootstrap your requests.
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See the data dictionary
Field names, types, and definitions are provided as both an HTML table and a JSON schema file.
Other links
- The landing page of this server as JSON (application/json)
- The landing page of this server as HTML (text/html)
- This document as JSON (application/json)
- This document as RDF (JSON-LD) (application/ld+json)
- This document as HTML (text/html)
- Schema of collection in JSON (application/schema+json)
- Schema of collection in HTML (text/html)
- Queryables for this collection as JSON (application/schema+json)
- Queryables for this collection as HTML (text/html)
- Items as GeoJSON (application/geo+json)
- Items as RDF (GeoJSON-LD) (application/ld+json)
- Items as HTML (text/html)
- Items as CSV (text/csv; charset=utf-8)