Hoover Dam Statistics

• 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

• 17 generators
• 4+ billion kilowatt hours produced each year10 acres of floor space

• 56% California
• 25% Nevada
• 19% Arizona

• 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)