DRY FALLS AND THE LOWER GRAND COULEE + GRAND COULEE DAM TOUR
Ice Age Floods expert, Gary Kleinknect, leads this trip “upstream” to the Grand Coulee. The Grand Coulee is an ancient river bed in the U.S. state of Washington. This National Natural Landmark stretches for about 60 miles Part of Grand Coulee Area (100 km) southwest from Grand Coulee Dam to Soap Lake, being bisected by Dry Falls into the Upper and Lower Grand Coulee.
Participants delve into the geological history of this area. Visit the Othello and Drumheller Channels in addition to Dry Falls, one of the largest waterfalls ever known, and its original plunge pool at Soap Lake.
Grand Coulee Dam is a concrete gravity dam on the Columbia River built to provide hydroelectric power and irrigation water. It not only powered aluminum smelters in Long view and Vancouver, Washington, Boeing factories in Seattle and Vancouver, and Portland’s shipyards. In 1943, its electricity was also used for plutonium production at the Hanford Site, which was part of the top-secret Manhattan Project.