"Hoover Reservoir" redirects here. For the reservoir behind the better-known Hoover Dam, see Hoover Dam.
Hoover Dam, in Blendon Township, near Westerville, Ohio, dams the Big Walnut Creek to form the Hoover Memorial Reservoir. This reservoir is a major water source for the city of Columbus, Ohio. It holds 20.8 billion US gallons (79,000,000 m3) of water and has a surface area of 3,272 acres (13.24 km2), or about five square miles. The dam was dedicated in 1955. It was named for two brothers, Charles P. Hoover and Clarence B. Hoover, to honor their careers with the City of Columbus Waterworks.
Construction facts: Quantity of concrete: approximately 180,000 cubic yards; Quantity of earth fill: approximately 600,000 cubic yards; Length of spillway: 680 feet (210 m); Length of dam: 2,583 feet (787 m); Maximum height of dam: approximately 94 feet (29 m) above stream bed; Uncontrolled spillway elevation: 890 feet (270 m) mean sea level; Top of dam elevation: 911 feet (278 m) mean sea level.