Caesar Creek State Park is located in southwestern Ohio, five miles (8 km) east of Waynesville, in Warren, Clinton, and Greene counties. The park is leased by the State from the U.S. Army Corps of Engineers, who in the 1970s erected a dam on Caesar Creek to impound a 2,830-acre (1,150 ha) lake. The total park area, including the lake, is 7,941-acre (3,214 ha).