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USGS -- Water Resources of the United States - http://h2o.usgs.gov/
Includes information on water use, with both historical and current data. |
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NASA's Global Change Master Directory - http://gcmd.gsfc.nasa.gov/
A comprehensive directory of information about Earth science data, including a broad coverage of the oceans, atmosphere, hydrosphere, solid earth, biosphere and human dimensions of global change. |
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Soil and Water Conservation Society - http://www.swcs.org/
A non-profit, scientific and educational organization of professional conservationists. |
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Color Landform Atlas of the United States - http://fermi.jhuapl.edu/states/states.html
Maps include satellite information, 1895 state maps, and links to outside resources. |
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USGS Global Change Research Program - http://geochange.er.usgs.gov/
The U.S. Geological Survey's Global Change Research Program is an international source for ground-based and remotely sensed earth science data and information used by global change researchers and contributing to assessments of the potential effects of global change on society. |