The USGS National Water Information System (NWIS) contains extensive water data for the Nation. Public access to many of these data is provided via NWISWeb (additional background). The Ground-Water...
Water-resources data were collected to describe the hydrologic conditions at the Raleigh hydrogeologic research station, located in the Piedmont Physiographic Province of North Carolina. Data...
Approximately 23 million U.S. citizens rely on their own private drinking water supplies. Most of these supplies are drawn from ground water through wells, but some households also use water from...
Aquifer: A formation, group of formations, or part of a formation that contains sufficient saturated, permeable material to yield significant quantities of water to wells and springs.
Data on concentrations of environmental tracers, such as chlorofluorocarbons (CFCs), tritium (3H), and other chemical and isotopic substances in ground water, can be used to trace the flow of young...
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