PENA BLANCA CREEK
PEÑA BLANCA CREEK. Peña Blanca Creek rises just northeast of the Wood Hollow Mountains and six miles southeast of Marathon in central Brewster County (at 30°10' N, 103°09' W) and runs southeast for seventeen miles, passing east of the Peña Blanca Mountains before reaching its mouth on San Francisco Creek, just west of Hell's Half Acre (at 30°01' N, 103°03' W). Peña Blanca Creek is intermittent for its first nine miles, but then flows perennially for three miles after Arden Draw joins it at Dead Horse Hole. A mile northeast of Horse Mountain it becomes intermittent again for about a mile, after which the stream flows perennially for its last four miles. In its upper reaches the creek passes through steep to gently sloping terrain with variable soils that support scrub brush and sparse grasses. Toward its mouth the local soils become shallow, stony, clay and sandy loams, in which oaks, mesquites, and grasses grow. Peña Blanca is Spanish for "white rock," a reference to the mountains of the same name.