U.S. DEPARTMENT OF THE INTERIOR
Bruce Babbitt, Secretary
U.S. GEOLOGICAL SURVEY
Charles G. Groat, Director
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The U.S. Geological Survey (USGS) has been collecting and interpreting ground-water data since the late 1800’s. Ground-water issues have increased in scope and complexity as competing demands on the resource have grown. Moreover, ground-water systems change over time in response to residential, industrial, and agricultural development, and in response to natural stresses such as droughts. Aquifers cross State lines and other political boundaries, creating the need for impartial regional and national ground-water information. The USGS Ground-Water Resources Program responds to these driving forces through ongoing efforts to examine and report on critical issues affecting the sustainability of the Nation’s ground-water resources. |
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format (3.8 MB)To read this report in pdf format, you need Adobe Acrobat Reader. It can be downloaded at: http://www.adobe.com/prodindex/acrobat/readstep.html |
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Copies of this report available upon request from: U.S. Geological Survey Information Services Box 25286 Federal Center Denver CO 80225 |
For additional information about this report contact: Chief, Office of Ground Water U.S. Geological Survey 12201 Sunrise Valley Drive Mail Stop 411 Reston VA 20192 |
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U.S. Department of the Interior, U.S. Geological Survey
Maintainer: Office of Ground Water Last update: 17:34:35 Mon 09 Jul 2001 Privacy Statement || Disclaimer || Accessibility URL: http://water.usgs.gov/ogw/gwrp/stratdir/stratdir.html |
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