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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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Introduction
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The U.S. Geological Survey's (USGS) National
Water Information System (NWIS) is a comprehensive and distributed
application that supports the acquisition, processing, and long-term
storage of water data. NWISWeb serves as the publicly available portal
to a geographically seamless set of much of the water data maintained
within NWIS (additional
background).
NWISWeb pages provide access to water data from over
1.5 million sites in all 50 States and additional border and
territorial sites. The data are organized within the categories listed
to the left.
The water data available via NWISWeb have been
acquired as part of the USGS investigations of the occurrence,
quantity, quality, distribution, and movement of the surface and
underground waters that constitute the Nation's water resources.
Additional information about the USGS and water resources of the Nation
is available at water.usgs.gov.
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