South Twin Lake (Maine)
 South Twin Lake having about 3200 acres (13 km2) is wholly within Penobscot County Maine. It is about 6 miles (10 km) west of Millinocket Maine and is part of the Pemadumcook Chain of Lakes. The lake is centered at 45°37.25′N 68°51′W and has spillway elevation 492 feet (150 m) above sea level. It is part of the watershed of the West Branch of the Penobscot River.There is a State-sponsored boat access ramp in Partridge Cove off Maine State Route 11 at 45°35′57″N 68°49′15″W.