The history of Dillon Dam and Lake is tied to flood control and water supply for the Muskingum River Basin. It was authorized by the Flood Control Act of 1938.
Salt Fork State Park was established in 1957 and is named after the Salt Fork of the Muskingum River which runs through it. The park's name is in refer to the historical salt licks in the area, which were significant to early settlers and indigenous peoples.