Hoover Dam

A concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between Nevada and Arizona. It was built between 1931 and 1936, during the Great Depression.

Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the boundary between Nevada and Arizona. It was built between 1931 and 1936, during the Great Depression, and dedicated by President Franklin D. Roosevelt on September 30, 1935. Thousands of workers took part in its construction, which cost over 96 lives.

The dam impounds Lake Mead and lies near Boulder City, Nevada, about 30 miles (48 km) southeast of Las Vegas. Its generators supply power to public and private utilities in Nevada, Arizona and California. It is a major tourist attraction, visited by 7 million tourists a year.