USGS Water API Documentation
Developer documentation for the services hosted at api.water.usgs.gov.
The services at api.water.usgs.gov are organized under four base paths.
Each section below documents one service path.
| Service path | Documentation | What it provides |
|---|---|---|
/nldi/linked-data/ |
NLDI Core API | Network navigation, feature discovery, and basin delineation on the NHDPlusV2 hydrologic network |
/nldi/pygeoapi/ |
NLDI pygeoapi Processes | Geoprocessing services — raindrop trace, split catchment, and cross sections — exposed via OGC API – Processes |
/fabric/pygeoapi/ |
Fabric pygeoapi | NHDPlusV2 and NHDPlusHR vector features (flowlines, catchments, hydrologic units, gages) via OGC API – Features and Tiles |
/gdp/pygeoapi/ |
GDP pygeoapi | Gridded climate and meteorological datasets via OGC API – EDR, STAC, and Processes |