The Hoover Dam is an impressive man-made structure. There’s a whopping 3.25 million cubic yards of concrete for the dam itself, plus another 1.11 million cubic yards for the power plant and additional facilities. That amount of concrete would be enough to build 3,000 miles of road—a full-sized highway from one end of the United States to the other. The dam’s energy helps provide power for customers in California, Arizona, and Nevada and creates enough energy for 1.3 million people. When it was completed in 1936, the Hoover Dam was the tallest dam in the world at 726 feet from base to top. It held the height title for two decades.
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