USGS

Fact Sheets

Fact Sheets by Theme

Fact Sheets - Home Page http://water.usgs.gov/wid/indexlist.html Environment http://water.usgs.gov/wid/index-environ.html Hazards http://water.usgs.gov/wid/index-hazards.html Information
Management http://water.usgs.gov/wid/index-infomgmt.html Resources http://water.usgs.gov/wid/index-resources.html State http://water.usgs.gov/wid/index-state.html

Accessibility FOIA Privacy Policies and Notices
U.S. Department of the Interior, U.S. Geological Survey Persistent URL: http://pubs.water.usgs.gov/fs00100 Page Contact Information: Publishing Service Center Last modified: Monday, January 09 2006, 04:45:42 PM