Data catalog
Every dataset on this portal, documented: its authoritative source, its recommended refresh cadence, and its formats. The portal's first job is clear display of conditions and trends; layer downloads are included here as a preview of a later-phase capability.
Dataset catalog
For developers
The portal is a thin layer over well-documented public APIs. The same calls that power this site are available to anyone.
| Source | Endpoint pattern | Returns |
|---|---|---|
| USGS real-time | waterservices.usgs.gov/nwis/iv/?stateCd=in | Live streamflow & gage height |
| USGS daily values | waterservices.usgs.gov/nwis/dv/?sites=… | Daily-mean discharge history |
| USGS groundwater | waterservices.usgs.gov/nwis/iv/?parameterCd=72019 | Depth-to-water levels |
| USGS watersheds | hydro.nationalmap.gov/…/wbd (HUC8) | Sub-basin boundaries (GeoJSON) |