The Pick-Sloan Plan was a comprehensive water management strategy developed in the 1940s to harness the resources of the Missouri River. It aimed to provide flood control, irrigation, and hydroelectric power through a series of dams and reservoirs. The plan was named after its creators, William Pick and Arthur Sloan, who sought to balance the needs of agriculture and energy production in the region. Implemented by the U.S. Army Corps of Engineers, the Pick-Sloan Plan led to the construction of several major dams, including the Gavins Point Dam and the Fort Peck Dam. This initiative significantly transformed the landscape and economy of the Great Plains, promoting agricultural development and providing reliable electricity to surrounding communities.