is a Data Source.
The National Water Information System (NWIS) is the U.S. Geological Survey's principal repository of water resources data for the United States, providing access to surface water, groundwater, and water quality data collected at monitoring sites and stream gages nationwide. NWIS is the authoritative source for USGS streamgage monitoring locations and national aquifer information. Geoconnex draws on NWIS as the source of record for its reference stream gage monitoring locations and USGS National Aquifer reference features.
| ID | Name | URL | Category | Format | Description |
|---|---|---|---|---|---|
| usgs-nwis.landing | USGS Water Data for the Nation (NWIS Web) | nwis | GraphicalInterface | http | USGS Water Data for the Nation web in... |
| ID | Name | URL | Category | Format | Relation | Description |
|---|---|---|---|---|---|---|
| geoconnex.graph | GEOCONNEX Knowledge Graph | geoconnex.us | GraphProduct | ttl | had primary source | The Geoconnex knowledge graph, an ope... |
The National Water Information System (NWIS) is the U.S. Geological Survey’s principal repository of water resources data for the United States. It provides access to surface water, groundwater, and water quality data collected at monitoring sites and stream gages nationwide, and is the authoritative source for USGS streamgage monitoring locations and national aquifer information.
Geoconnex draws on NWIS as the source of record for its reference stream gage monitoring locations and USGS National Aquifer reference features.
Created: July 02, 2026 | Last modified: July 02, 2026