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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,... -
National Water-Quality Assessment (NAWQA) Project
Our surface water, groundwater, and aquatic ecosystems are priceless resources, used by people across the Nation for drinking, irrigation, industry, and recreation. The... -
Overview of Fresh and Brackish Water Quality in New Mexico - Open-file Report...
Access to adequate supplies of fresh water is becoming an increasingly critical issue in many parts of the world. In arid regions of the southwestern United States, diminishing...
