Wills Creek Lake serves as the Project Office for the projects located within the Lower Tuscarawas section of the Muskingum Area. Wills Creek Lake was authorized by Section 4 of the Flood Control Act (FCA) of 1938, as amended by Section 4 of the FCA of 1939. Primary project purposes are flood damage reduction, recreation, and fish and wildlife. The dam was completed in June 1936 and serves a drainage are of 724 square miles.