World Water Crisis Map
Diseases; definitions and descriptions of waterborne diseases, with maps; information compiled by Lenntech.
of Columbia Wetlands
- Atlas of America's Polluted Waters
Map's, World Atlas; Includes oceans and major bodies of water.
ODA on Water/Map of Key Areas of Japanese Assistance
and Samaria Water Resources
Surf Your Watershed: EPA
-- USGS Maps and graphs of current water conditions