Lake of Egypt is a reservoir in the Little Egypt region of the U.S. state of Illinois. It is located six miles (10 km) south of Marion, Illinois and covers 2,300 acres (9 km²) with 90 miles (140 km) of shoreline. The lake has an average depth of 18 feet (5.5 m) with a maximum depth of 52 feet (16 m). The lake is owned by the Southern Illinois Power Cooperative (SIPC), who created the impoundment in 1962, by damming the South fork of the Saline River, to supply cooling water for a coal-burning electric power plant.