STERLING CREEK. Sterling Creek rises sixteen miles southeast of Garden City in southeast Glasscock County, near the Sterling county line (at 31°43' N, 101°19' W). The intermittent stream runs northeast for thirty-three miles to its mouth on the North Concho River, two miles southeast of Sterling City in central Sterling County (at 31°48' N, 100°57' W). Sterling Creek runs through a natural geologic floodplain containing sand, gravel, and mud substrate with some bedrock areas. Water-tolerant hardwoods, conifers, and grasses grow there in soil containing clay and sandy loam.