Was the Hoover Dam ever de-watered for a five-year inspection?
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The lake behind the dam holds more than two years average flow of the Colorado River. It took more than a year after construction before the water level was high enough for power generation. read more
Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt. read more
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