Melton Hill Lake. Melton Hill Lake is on the Clinch River and is a relatively long, narrow lake with 173 miles of shoreline and 5,690 acres of surface water. Melton Hill Dam features a navigation lock that allows boat passage to Watts Bar and other TVA lakes on the Tennessee River. Melton Hill is located near Knoxville and Oak Ridge, Tennessee, and is easily accessible from Interstate 40. From Knoxville, go west on I-40 and take exit 364. Go north 1/2 mile on Highway 95, and watch for signs.