 The Dale Hollow Lake impoundment of the Obey River dominates the area just a few miles to the north.Mill Creek, the park's major stream, flows down from its source on Reynolds Mountain (near Allons) to the east and winds its way westward through the hills of northern Overton County before emptying into the Cumberland River.At Standing Stone State Park, the steep ridge upon which the park's main facilities are located briefly pushes the westward-flowing Mill Creek southward through a horseshoe bend.