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An official website of the United States government

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Data & Maps

USGS Water Data for the Nation

Associated Agencies

United States Geological Survey (USGS)

These pages provide access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands.

The USGS investigates the occurrence, quantity, quality, distribution, and movement of surface and underground waters and disseminates the data to the public, State and local governments, public and private utilities, and other Federal agencies involved with managing our water resources. 

Datasets include: Surface-water, Groundwater, Water-quality, Streamflow, Water flow, Lake levels, Well levels, etc.

How to

How to use this site:

  • Use the Web Interface to select water data options


USGS Water Data for the Nation: National Water Information System web interface

USGS Water Data for the Nation: Mapper