Data Category
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Current-conditions data transmitted from selected surface-water, ground-water,
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
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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