Between Nevada and Arizona
Construction: 1931-1936Hoover Dam, once known as Boulder Dam, is a concrete arch-gravity dam in the Black Canyon of the Colorado River. It is situated on the Nevada-Arizona border, 30 miles southeast of Las Vegas. The dam streatches 1,244 feet across the Black Canyon. Hoover Dam took five years to construct. It was built to control flooding along the Colorado River and provide water and hydroelectric power for California and the Southwest. Since its construction, it has spurred tremendous growth...