US Geological Survey

USGS Water Data OGC API

The USGS Water Data OGC APIs provide OGC-compliant interfaces to USGS water data including real-time continuous measurements from automated sensor networks, daily summary values, field measurements, and monitoring location metadata. Covers streamflow, gage height, groundwater levels, water quality, and hundreds of other parameters. API key required. Legacy WaterServices decommissioning in Q1 2027.

GitHub OpenAPI

Documentation

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Documentation
https://api.waterdata.usgs.gov

Specifications

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OpenAPI
https://api.waterdata.usgs.gov/ogcapi/v0/openapi?f=json
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OpenAPI
https://raw.githubusercontent.com/api-evangelist/us-geological-survey/refs/heads/main/openapi/usgs-water-data-openapi.yml

OpenAPI Specification

openapi Raw ↑