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 of water and has a surface area of , or about five square miles. Construction began during 1953 due to the increased water demand of post-war Columbus. The project was completed and dedicated in 1955 and the dam officially opened in 1958. It was named for two brothers, Charles P. Hoover and Clarence B. Hoover, to honor their careers with the City of Columbus Waterworks. Construction statistics Quantity of concrete: approximately Quantity of earth fill: approximately Length of spillway: Length of dam: Maximum height of dam: approximately above stream bed Uncontrolled spillway elevation: mean sea level Top of dam elevation: mean sea level Gallery References External links Kayak Hoover Dam - a semi-informative treatise on the wonders of kayaking at the Central Ohio Reservoir, complete with pictures and interactive maps leading to boat ramps. GoFishOhio.com - information about fishing at Hoover Reservoir Ohio DNR fishing map of Hoover Reservoir Dams in Ohio Buildings and structures in Franklin County, Ohio Westerville, Ohio Dams completed in 1955 1955 establishments in Ohio