Clear Fork Reservoir is located in Richland and Morrow counties, approximately 8 miles southwest of Mansfield along OH-97.

Clear Fork Reservoir was completed in 1949. The city of Mansfield constructed this 971-acre reservoir as a water supply lake.

Clear Fork Reservoir has a gently sloping bottom with a maximum depth of 24 feet. The upper end is shallow with numerous tree stumps. Several islands characterize the mid-lake area while the lower end is deeper and open.