The largest electric power-producing facility and the largest concrete structure in the United States, Franklin Delano Roosevelt Lake was created by the construction of what dam?
Franklin D. Roosevelt Lake Franklin D. Roosevelt Lake Franklin D. Roosevelt Lake (also called Lake Roosevelt) is the reservoir created in 1941 by the impoundment of the Columbia River by the Grand Coulee Dam in Washington state. It is named for Franklin D. Roosevelt, who was President during the construction of the dam. Covering , it stretches about from the Canada–US border to Grand Coulee Dam, with over of shoreline; by surface area it is the largest lake and reservoir in Washington. It is the home of the Lake Roosevelt National Recreation Area. The reservoir lies in parts of five counties in northeastern Washington;
Hydroelectric power in the United States over Thomas Edison's direct current methods. Multiple permanent hydropower stations still exist on both the American and Canadian sides of the Falls, including the Robert Moses Niagara Power Plant, the third largest in the United States. The need to provide rural development in the early 20th century was often coupled to the availability of electric power and led to large-scale projects like the Tennessee Valley Authority which created numerous dams and, sometimes controversially, flooded large areas. In the 1930s, the need for power in the Southwest led to the building of the largest concrete construction in the world at that