Feature Ecosystems Dam demolition lets the Elwha River run free In the restored river, Pacific salmon are returning in droves LET THE RIVER RUN The demolition of the Glines Canyon Dam, shown here in November 2012, allowed Washington state’s Elwha River to run free for the first time in nearly a century. John Gussman Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Alexandra Witze December 30, 2014 at 4:06 pm View the video On a sun-dappled autumn day in the Pacific Northwest, Jeff Duda stands on the banks of a thundering river.