Lake Carthage Lakeside Use Area sits on the shore of the 1,300-acre Lake Carthage near Carthage. It has 13 electrical campsites and several primitive tent sites, a boat ramp and a boat beach. Lakeside campsites have lake views. The town of Carthage is a short distance away for supplies. Fishing, paddling, sailing, swimming and stargazing are popular. The park is eight miles west of SD Highway 25 on 222nd Street. Water hydrants may be closed from October to April.