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Hoover Dam, near Columbus, Ohio, dams the Big Walnut Creek to form the Hoover Memorial Reservoir. This reservoir is a major water source for the city of Columbus. The dam is, however, much smaller than the better-known Hoover Dam on the Colorado River.
The dam was dedicated in 1955. It was named for two brothers, Charles and Clarence Hoover, to honor their careers with the City of Columbus Waterworks.