Hoover Dam
Check out the Hoover Dam. The Bureau of Reclamation in the U.S. proposed a dam to calm the Colorado River plus receive hydroelectric power for the Southwest. President Calvin Coolidge signed a bill approving the dam in 1928. Construction began in 1931 and finished in 1936. The Roosevelt administration called it the Boulder Dam, but Congress reverted it to the Hoover Dam in 1947. The dam is 726 feet (221.4 meters) in height and 1,244 feet (379 meters) long.