With global coverage and continued refinements, Lehner hopes that future releases of HydroSHEDS will serve a wide variety of scientific and practical applications. For example, biologists sampling fish species often use GPS (Global Positioning System) coordinates to locate habitats on maps. If their maps arent completely accurate, they might place fish in the wrong water body. That could be a serious problem if, for example, they are trying to identify rivers that support populations of threatened or endangered species. When the scientists Lehner worked with wondered whether this problem could be solved, he recalls, Everyone said, Not really. We dont have good enough maps. But now they suddenly do. Using HydroSHEDS, conservation biologists can pinpoint species habitats with unprecedented accuracy.
Information provided by http://earthobservatory.nasa.gov/Study/HydroSHEDS/hydrosheds3.html