
After pouring more than 3,250,000 cubic yards of concrete, the structure opened as the Boulder Dam in 1935, years ahead of schedule. The name would later be officially changed to the Hoover Dam in 1947 in honor of President Hoover, who pushed for its construction. By blocking the river, the dam created the 247 square mile Lake Mead. The water that flows through the dam and its power turbines generates enough electricity to be spread across the power grids of three states including Nevada, Arizona, and California. See the dam yourself by signing up for the Hoover Dam Tour at the 2020 World of Concrete.
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