South Crocker Mountain rises in western Maine's Franklin County on a high ridge between Crocker Mountain and Mount Redington, within the uplands of the Carrabassett and Dead River watersheds. Its slopes send water in different directions: the northeast and southeast faces drain to the South Branch of the Carrabassett River, while the west face drains through Nash Stream to the South Branch of the Dead River, Flagstaff Lake, and the Dead River, all within the Kennebec basin. The mountain is also crossed by the Appalachian Trail, whose route from the summit continues north along the ridge and east across Caribou Valley toward Sugarloaf Mountain.