Sooner Lake is a reservoir in Pawnee and Noble counties in the U.S. state of Oklahoma. It was built in 1972 to serve as a reservoir of cooling water for a coal-fired power generation plant owned by Oklahoma Gas and Electric Company (OG&E). The plant is at the northwest end of the lake. The normal elevation is 927 feet (283 m). Maximum depth is 89 feet (27 m) and average depth is 28 feet (8.5 m). The lake covers 5,400 acres (22 km2) and has a water capacity of 149,000 acre feet (184,000,000 m3). The shoreline is 42 miles (68 km) long.