The Hoover Dam: Controlling Flooding, Generating Energy, and Boosting Tourism
TLDR The Hoover Dam was built in Black Canyon to control flooding, create a reservoir, generate energy, and boost tourism at Lake Mead. It was constructed using a gravity arch design and innovative methods to quickly cure the concrete.
Timestamped Summary
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The Hoover Dam was originally planned to be built at Boulder Canyon but was moved to Black Canyon, where Nevada and Arizona almost meet, due to its more suitable location, and it was conceived to control flooding, create a reservoir, generate energy, and kill birds.
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The Hoover Dam was also intended to boost tourism at Lake Mead, which was the first nationally designated recreation area, and to address the issues of water scarcity and flooding in the Southwest caused by the unpredictable nature of the Colorado River.
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In 1918, the US Bureau of Reclamation proposed the construction of the Hoover Dam to control the Colorado River, provide water to seven states, generate energy, and prevent flooding, with Herbert Hoover brokering a deal to distribute the water and Congress approving the project despite opposition from the private sector.
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The Hoover Dam was officially named in 1931, but was briefly called the Boulder Dam due to public dislike of President Hoover, and six major construction companies formed a consortium to undertake the project.
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The city built for the workers of the Hoover Dam project remained under government control until 1959, when it got its own incorporation, and it was one of two cities in Nevada that did not allow gambling.
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To divert the river and begin construction on the dam, engineers built coffer dams and four tunnels to redirect the water flow, with each tunnel being a mile long and lined with three feet of concrete, allowing for the successful diversion of the Colorado River.
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Engineers had to use jackhammers and dynamite to blast holes in the canyon walls for the construction of the dam, and workers had to make their own hard hats before the company provided them.
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During the construction of the Hoover Dam, a man named Burl Rutledge fell off the canyon rim and was saved by two high-scalers who held him against the canyon wall until they could pull him up.
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The Hoover Dam was built using a gravity arch design, which utilizes the natural pressure of the land to strengthen the dam, and a total of 3.25 million cubic yards of concrete were used in its construction.
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The workers at the Hoover Dam came up with an ingenious way to cure the concrete quickly by running steel pipes through it and pumping cooled water through the pipes, allowing the concrete to cure in about 72 hours instead of 125 years.
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