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USGS Water Data for the Nation
These pages provide access to water-resources data collected at approximately 1.9 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands,... -
USBR Hydrodata Gage Map
The Bureau of Reclamation’s new hydrologic database access portal. For more information see https://www.usbr.gov/uc/water/
