Workers building the Hoover Dam

Hoover Dam Statistics

The Dam
  • 726.4 feet high (221m)
  • 1,244 feet wide (379 m)
  • 660 feet (203 m) thick at the base
  • 45 feet (13 m) thick at the top
  • $165 million dollars to build
  • 4.5 years to build
  • 4.4 million yards of concrete used for construction
  • March 1931 building began
  • September 30, 1935 President Franklin D. Roosevelt dedicated the completed dam
Powerhouse
  • 17 generators
  • 4+ billion kilowatt hours produced each year10 acres of floor space
Power used by
  • 56% California
  • 25% Nevada
  • 19% Arizona
Lake Mead
  • 6.5 years to fill (A slow filling process was required to lessen the pressure change on the dam and to help prevent small earthquakes due to land settlement.)
  • 589 feet (181 m) at the deepest point
  • 247 square miles in size
  • 110 miles (176 km) long
  • Named after Dr. Elwood Mead, Commissioner of the Bureau of Reclamation (1924 - 1936)
  • Largest man made reservoir in the United States

(Photo courtesy of United States Department of the Interior Bureau of Reclamation - Lower Colorado Region)