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Web Tools

Below are web-based tools, maps, or applications related to, or developed by the Maryland-Delaware-District of Columbia Water Science Center.

National Water Information System (NWIS) 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.

Well locations at Assateague Island National Seashore, Worcester County, MD.

Well locations at Assateague Island National Seashore, Worcester County, MD.