Water is not distributed evenly on the earth. This NASA image of plant growth in North America highlights water-rich regions in dark green and water poor areas in light tan. It is estimated that by the year 2010, southern Nevada will have committed 100% of its available water: there will be none to support new population growth or agricultural and industrial applications. The U.S. Geological Survey has concluded that we can no longer count on dams and aqueducts to increase water supply, but must look to conservation, recycling, and reuse to meet the nation’s ever increasing water demands. Today, western states have begun to look to the east, particularly to the Great Lakes, for help in meeting future needs.