Data Category
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Current-conditions data transmitted from selected surface-water, groundwater,
and water-quality sites.
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Descriptive site information for all sites with links to all available water data for individual sites.
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Water flow and levels in streams, lakes, and springs.
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Water levels in wells.
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Chemical and physical data for streams, lakes,
springs, and wells.
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Map of all sites with links to all available water data for individual sites.
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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. Online access to this data is organized around the categories listed to the left. 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.
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