Lake Roosevelt National Recreation Area of Lake Roosevelt also falls under the jurisdiction of the National Recreation Area. Lake Roosevelt National Recreation Area Lake Roosevelt National Recreation Area is a U.S. National Recreation Area under the supervision of the National Park Service. It encompasses the long Franklin D. Roosevelt Lake between Grand Coulee Dam and Northport, Washington, in eastern Washington state. The Grand Coulee Dam was built on the Columbia River in 1941 as part of the Columbia River Basin project, named for President Franklin D. Roosevelt. Lake Roosevelt National Recreation Area provides opportunities for fishing, swimming, canoeing, boating, hunting, camping, and visiting historic Fort
Grand Coulee Dam of electricity. Each generator is supplied with water by an individual penstock. The largest of these feed the Third Powerplant and are in diameter and can supply up to . The dam's power facilities originally had an installed capacity of 1,974 MW but expansions and upgrades have increased generation to 6,809 MW installed, 7,079 MW maximum. Grand Coulee Dam generates 21 TWh of electricity annually. This means the dam generates about 2,397 MW of power on average, which results in a total plant factor efficiency of 35%. In 2014, 20.24 TWh of electricity was generated. Grand Coulee Dam's spillway is