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The locations of approximately 26,000 current and historical U.S. Geological Survey (USGS) surface-water monitoring gaging stations have been indexed to the NHDPlus Version 2.1 stream network. Part of the USGS National Water Information System (NWIS), these gaging stations measure water flow and water levels in streams and lakes. The NHDPlus V2 stream network locations for these gaging stations differ from stations' latitude/longitude provided in NWIS. The NWIS coordinates are frequently not coincidenet with the NHDPlus stream network.


    map background search result map search result map Gage Locations (GageLoc.shp) indexed to the NHDPlus Version 2.1 stream network NHD Point Events (Snapshot 8/25/2016) Gage Locations (GageLoc.shp) indexed to the NHDPlus Version 2.1 stream network NHD Point Events (Snapshot 8/25/2016)