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The Hoover Dam Police, officially the Bureau of Reclamation Police, was a federal security police force, stationed at Hoover Dam southeast of Las Vegas. Reclamation Police Officers were stationed only at Hoover Dam. Hoover Dam was both listed on the National Register of Historic Places in 1981, and was designated a National Historic Landmark in 1985. Hoover Dam has been designated as National Critical Infrastructure. The primary responsibilities of the Hoover Dam Police Officer were to protect the dam, the world's 57th-largest hydroelectric generating station, which provides about 2,080 megawatts, its associated structures, and to safeguard the lives of visitors and employees. The Hoover Dam Police were assisted by unarmed Bureau of Reclamation Security Guards who control access to reclamation facilities and deter individuals who might consider criminal activities or terrorist acts.