Augusta, ME, Jul 06, 2009 — Water powered the first industries in the northeast. But damming rivers to produce that power has consequences -- walling off rivers and stopping fish from migrating upstream. In recent years more than 20 dams have been knocked down in the Northeast. This month marks the ten-year anniversary of one of the first to come down: the Edwards Dam in Augusta, Maine. As part of a collaboration with northeast stations, Susan Sharon reports there are tradeoffs to dam removal, too, especially in an era of climate change.