This U.S. Environmental Protection Agency (EPA) website allows users to locate, use and share environmental information about their state and watershed. Using the interactive map, users can locate their watershed and discover geologic, chemical, and geographical information. Visitors can learn how to adopt a watershed and locate citizen-based groups. The Watershed Atlas provides data and geo-spatial information dealing with watershed protection and restoration including demographics, downstream effects, and vulnerability. Informed users can find out how to add valuable materials about a specific watershed to this website.