Includes information on water use, with both historical and current data.
List of links to websites on geography
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.
A non-profit, scientific and educational organization of professional conservationists.
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.
Maps include satellite information, 1895 state maps, and links to outside resources.
An introduction to topics in physical geography including: geomorphology, meteorology, biogeography and hydrology.
A wide choice of links to sites dealing with earth surface features including natural hazards.
Guide to many Physical Geography sites
Index of articles about Daylight Saving Time, the hydrologic cycle, El Nino, rivers, seasons, ice ages, and more topics in Physical Geography