Hoover Dam, once known as Boulder Dam, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the US states of Arizona and Nevada. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. The dam was controversially named after President Herbert Hoover.
Construction date: 1931
Opening date: 1936
Height: 726.4 ft (221.4 m)
Length: 1,244 ft (379 m)
Base width: 660 ft (200 m)
U.S. National Register of Historic Places: April 8, 1981
U.S. National Historic Landmark: August 20, 1985
U.S. National Register of Historic Places: April 8, 1981
U.S. National Historic Landmark: August 20, 1985
Thank you, Katrina !
Sent on: August 8, 2012
Received on: August 14, 2012
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