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National Water Information System (NWIS) Mapper

March 4, 2019
Access the mapper

The National Water Information System (NWIS) Mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

NWIS Mapper screenshot
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Screenshot of the National Water Information System (NWIS) Mapper.