Hoover dam ââ¬â a unique hydraulic structure in the U.S., a concrete arch-gravity dam with a height of 221 m and a hydroelectric power station built in the lower reaches of the Colorado river. Located in Black canyon, on the border of Arizona and Nevada, 48 miles Southeast of Las Vegas, a few kilometers from the town of boulder city; forms a lake (reservoir) Mead. Named in honor of Herbert Hoover, 31st U.S. President, who played an important role in its construction.
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