New Hydro

on Existing Dams

There are more than 80,000 dams in the United States of which less than 3,000 currently generate hydroelectric power. Even after excluding subsets of the remaining dams for either not having enough power potential to justify the costs of developing them or for being in environmentally sensitive areas that would have adverse or high impacts on the environment, there remain thousands of dams that were built for some essential purpose, such as navigation or flood control, that do not generate power.