Hoover left office, the Interior Department, for reasons that need not be referred to in detail here, avoided the use of the name Hoover Dam where possible, and used the namesBoulder Canyon Dam or Boulder Dam.
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Today, the Hoover Dam is the second highest dam in the country and the 18th highest in the world. It generates more than four billion kilowatt-hours a year -- that's enough to serve 1.3 million people! Here's how this dam stacks up against some of the biggest dams in the world.
Hoover Dam is as tall as a 60-story building. It was the highest dam in the world when it was completed in 1935. Its base is as thick as two football fields are long. Each spillway, designed to let floodwaters pass without harming the dam itself, can handle the volume of water that flows over Niagara Falls.
Lake Mead did not exist before the construction of the Hoover Dam. The Hoover Dam impounds the Colorado River, forming Lake Mead, which is the largest reservoir in the United States by volume.
The Dam FutureWhile the dam is expected to last for centuries, engineers predict the structure could last for more than 10,000 years, surpassing most remnants of human civilization if humans were to disappear from the earth.
The Grande Dixence Dam (French pronunciation: [g?ãd diksãs]) is a concrete gravity dam on the Dixence at the head of the Val d'Hérémence in the canton of Valais in Switzerland. At 285 m (935 ft) high, it is the tallest gravity dam in the world, seventh tallest dam overall, and the tallest dam in Europe.
The oldest operational dam in the world, the Lake Homs Dam in Syria, was built around 1300. The masonry gravity dam is over one mile long, 23 feet high, and creates Lake Homs, which still supplies water to the people of Homs today.
A study by the World Commission on Dams placed China's large dam total at over 22,000-the most in the world. Large dams are those roughly four stories or taller. Most of China's were built after 1949.