The Elwha River Published May 9, 2015 at 3984 × 2988 in Washington Family Adventures Part 2 – Olympic National Park ← Previous Next → The recovery of the Elwha valley The valley recovering after the deconstruction of the Elwha dam. An interesting civil engineering and ecological project. We first saw this project in 2013, just after the dam was removed; now, there are signs of the valley recovering.