Rocky Fork Lake from its western end
Rocky Fork State Park is a state park located at 9800 North Shore Drive in Highland County, Ohio, United States. Rocky Fork State Park contains the 2,080-acre (8 km2) Rocky Fork Lake. The lake was added to the state park system in 1950.
The park has a marina, boat ramps, swimming beaches, picnic areas and hiking trails. 
Within the park are located two significant archaeological sites dating from the Hopewellian period: the Rocky Fork Park Group and the Rocky Fork Park Site.