USGS -- Water Resources of the United States

Category:	Water Resources
Title:	USGS -- Water Resources of the United States
Listing URL:	http://water.usgs.gov/
Description:	Home page for water resources information from the U.S. Geological Survey. Topics include ground water, surface water, water use, water quality, acid rain, toxic substances hydrology.
Clicks:	104
Link added:	Apr 23, 2007
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