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The Hemenway boat ramp at the marina on Lake Mead, the country's largest man-made water reservoir, formed by Hoover Dam on the Colorado River in the Southwestern United States, which has dropped 2 inches every day since February (26 feet in one year), is viewed as the lake is at approximately 25% capacity is viewed on July 12, 2022 near Boulder City, Nevada. The lake, a national recreation area, located within the states of Nevada and Arizona 24 miles east of the Las Vegas Strip, serves water to the states of Arizona, California, Utah, Colorado, and Nevada, as well as parts of Mexico, providing fresh water to nearly 20 million people and large swaths of farmland. (Photo by George Rose/Getty Images)