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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,... -
Source Water Protection Areas
Source Water is the raw, untreated supply of water from surface water or groundwater used for current or future drinking water. Source Water protection reduces the risk of water... -
EDI Data Portal
The EDI Data Portal contains environmental and ecological data packages contributed by a number of participating organizations. Data providers make every effort to release data...