Environmental Engineering Reference
In-Depth Information
A drawing of what an OTEC plant might look like. Such plants could someday deliver a
great deal of electricity.
u
Removing
Outdated Dams
In 1999, a small, old hydroelectric dam in Maine called the
Edwards Dam was taken down. The dam had been on the
Kennebec River. A government agency had ruled that the
ecological value of letting the river fl ow freely was greater
than the economic value of the dam. When the river was
able to fl ow freely, many fi sh returned. This led birds to
return to the area as well. In addition, people were able
to go boating and fi shing. Since the Edwards Dam was
removed, more than 400 other outdated U.S. dams have
been taken down.
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