The reservoir reportedly covers the American Indian village of Kickenapauling's Town, which was referred to in records of Christopher Gist, as well as in the 10 June 1779 deed of Joseph Johns, after whom Johnstown was named.

It is one of the largest artificial bodies of water in Pennsylvania,[4][5] and is known as a stopover for migratory waterfowl, including geese, swans, and herons.

[6] In April 1917, a special police force was stationed at the Hickston Run and Quemahoning reservoirs as "a precaution against possible plots to cripple the great Cambria Steel Company's plant" during World War I, according to area newspapers.

[9] The original sixty-six-inch pipeline built by Manufacturers Water Company from the reservoir to Johnstown was subsequently upgraded and refurbished after the sale to the Cambria Somerset Authority.

[10] Bethlehem Steel Corporation ran a gun club, a farm house and Bethco Pines, a recreational park for its staff.