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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,... -
USGS WaterWatch
WaterWatch (http://waterwatch.usgs.gov) is a U.S. Geological Survey (USGS) World Wide Web site that displays maps, graphs, and tables describing real-time, recent, and past... -
National Groundwater Conditions Web Application
Groundwater is a critical resource for many people, and the USGS generates groundwater level data for thousands of sites across the United States and outlying territories. The...
