NOBLE CREEK. Noble (Nobles) Creek rises in extreme western Lamar County (at 33°36' N, 95°49' W) just west of Petty and northeast of the intersection of Farm Road 38 with U.S. Highway 82. It runs south for seven miles to its mouth (at 33°31' N, 95°48' W) on the North Sulphur River, four miles southeast of Harmon at Farm Road 38. It traverses flat to gently rolling terrain surfaced by dark clays that support grasses and some water-tolerant hardwoods and conifers. At its mouth low-lying floodplains are surfaced by sand and gravel.