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View Resource Ground Water

Some water underlies the Earth's surface almost everywhere, beneath hills, mountains, plains, and deserts. It is not always accessible, or fresh enough for use without treatment, and it's sometimes...

http://pubs.usgs.gov/gip/gw/
View Resource Basic Ground-water Hydrology

Ground water is one of the Nation's most valuable natural resources . It is the source of about 40 percent of the water used for all purposes exclusive of hydropower generation and electric...

http://pubs.usgs.gov/wsp/wsp2220/
View Resource Ground Water and Surface Water A Single Resource

Library Holdings. As the Nation's concerns over water resources and the environment increase, the importance of considering ground water and surface water as a single resource has become...

http://pubs.usgs.gov/circ/circ1139/
View Resource Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands

An aquifer is a geologic 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....

http://nationalatlas.gov/mld/aquifrp.html
View Resource Aquifer Basics

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.

http://water.usgs.gov/ogw/aquiferbasics/
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EERL is a product of a community college-based National Science Foundation Center, the Advanced Technology Environmental and Energy Center (ATEEC), and its partners.

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