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Peaks

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.

  • Browse the data

    Explore peaks observations in your browser! Requests made in a browser will default to returning HTML responses; add f=json to 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.

  • See the data dictionary

    Field names, types, and definitions are provided as both an HTML table and a JSON schema file.

Other links

Reference Systems