South Arm Township is located in southern Charlevoix County and is bordered by Antrim County to the south and west. The township surrounds the city of East Jordan. The township’s name comes from the South Arm of Lake Charlevoix, which extends from the northern border to the center of the township. According to the United States Census Bureau, the township has a total area of 32.7 square miles (84.6 km2), of which 30.7 square miles (79.4 km2) is land and 2.0 square miles (5.3 km2), or 6.25%, is water.
Notable locations in this township outside city limits:
Notable locations in South Arm Township: Swan Valley Marina, Mallard Golf Club, Elm Pointe Historical Museum
Churches in South Arm Township include: Lighthouse Missionary Church, Evangelical Lutheran Church, and Bethel Baptist Church
Cemeteries: Lakeside Cemetery & Jones Cemetery
Lakes: Charlevoix Lake, Patricia Lake, Six Mile Lake
Creeks: Black Kettle Creek , Jones Creek , Chanda Creek , Liscon Creek , Lyman Creek , Saint Clair Creek , Deer Creek , Monroe Creek , Ranney Creek
Parks in South Arm Township include: Elm Pointe Park, John and Eva Porter Estate Historical Marker.