Nonpoint Source Management Program
A wealth of information about Pennsylvania's projected plans to address nonpoint source pollution and watershed management. Available resources include project summaries, guides, factsheets, annual reports, strategies, involved organizations, and sites with related information.
http://www.dep.state.pa.us/dep/deputate/watermgt/WC/Subjects/NonPoint.htm

American Rivers, Inc.
This organization, founded in 1973, is North America's leading river conservation organization. Their mission is to protect and restore America's river systems and to foster a river stewardship ethic. To expand both appreciation and conservation of rivers across the country, American Rivers annually distributes North America's Most Endangered and Threatened Rivers, which focuses attention on the problems confronting our nations' rivers.
http://www.amrivers.org

South Florida Water Management District
How did water diversions change the Everglades? The South Florida Water Management District is the state agency responsible for water use and management of water in the Everglades region of all south Florida. On this website, there are maps of south Florida and the Everglades region from 1900, 1953, and 1973. Download each of these images and examine the amount of sawgrass habitat change during this period of time as a consequence of agriculture (sugar cane plantations), urbanization, and water diversions.
http://www.sfwmd.gov

Federal Bureau of Reclamation
Environmental studies involving Glen Canyon Dam and other large irrigation projects in the western USA.
http://www.usbr.gov/uc/

Nonpoint Source Pollution
A web site sponsored by the U.S. EPA that provides information about nonpoint source pollution including definition, categories, material for students and educators, the Clean Water Act and the Coastal Zone Act Reauthorization Amendments.
http://www.epa.gov/owow/nps

U.S. Geological Survey, Water Resources
You can interactively link to a database of water flow data for your watershed at this website. Excellent source of information about regional water flow statistics. You can download the water flow data for your local watershed or display it as a graph on your computer.
http://water.usgs.gov/

Surf Your Watershed
EPA. Find your watershed and study the environmental conditions. Also contains site specific information about the index of watershed indicators , EPA databases, citizen-based groups, restoration efforts etc.
http://www.epa.gov/surf/

U. S. Bureau of Reclamation, Water Conservation
From the federal agency responsible for management, use, supply, and conservation of water in the western U.S., check out current water conservation plans and programs.
http://www.usbr.gov/wrrl/wc/wc.html

Environmental Protection Agency's Office of Water
This site provides information about water, water topics including laws and regulations, drinking water, pollution, and current water news.
http://www.epa.gov/watrhome

U.S. Army Corps of Engineers
This agency is heavily involved with navigation on U.S. waterways as well as flood control and damage assessments. The Corps also regulates activities on designated wetlands and along the coasts. The widely used "Wetlands Delineation Manual" can be found at this site.
http://www.usace.army.mil/public.html