US Environmental Protection Agency
Epa: Great Lakes
The EPA profiles the Great Lakes ecosystem, their ecological protection and restoration, wetlands, shorelands, pollution prevention, and so on. Click "Visualizing the Great Lakes" for pictures of the lake environment.
Other
Great Lakes Information Network
The Great Lakes Science Center provides research on various topics concerning the Great Lake environment such as fish advisories, contaminants, threatened species, low water levels, and sustainable development of the Lakes.
Other
U.s. Lakes
This site has access to information on the United States' lakes. Click on a state to find an alphabetical listing of all the lakes in the state, linked to information on them.