"the largest dam-removal project in North America"

It's the largest dam-removal project in North America, and a second chance for the Elwha River valley, where dams have blocked salmon runs for more than a century. Two dams on the river are being taken out in a $325 million grand experiment that's one of the most ambitious ecological restoration efforts in the U.S.

http://seattletimes.nwsource.com/flatpages/specialreports/elwha/