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USGS Water Data for the Nation
These pages provide access to water-resources data collected at approximately 1.9 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands,... -
Aquifer mapping program technical document: Water sampling procedures, analys...
Groundwater and surface water sampling is often done under the auspices of the Aquifer Mapping Program and other related hydrogeologic studies at the New Mexico Bureau of...
