Clendening Lake is a reservoir located in Harrison County, Ohio, in the United States, formed by damming Brushy Fork, 0.5 mi East of Tippecanoe. It is part of the Muskingum Watershed Conservancy District, which was created in 1933 to control flooding in the state of Ohio, primarily due to the Great Flood of 1913. It is known as the largest undeveloped lake in the state of Ohio, yet has on its shores: Boy Scout Summer Camp Fort Steuben Scout Reservation Clendening Marina in Freeport, Ohio and the YMCA's Camp Tippecanoe near the town of Tippecanoe, Ohio, along with a campground, playground, and picnic area. Locals to the area have said that there are still buildings under the lake's waters from a former community that existed prior to the area's flooding to create the lake. The Ohio state record flathead catfish was caught in Clending Lake on July 28, 1979. It weighed 76.5 pounds and was 58 5/8″ in length.

Clendening Dam

Clendening dam is 750 ft long, located 0.6 mi East of the community of Tippecanoe with a normal water pool level of 898 ft above sea level.