MAXON CREEK. Maxon Creek rises twenty miles southeast of Marathon, just north of the Tres Hermanas Mountains, and northeast of Hell's Half Acre in east central Brewster County (at 30°04' N, 102°58' W) and runs southeast for forty-eight miles to its mouth on San Francisco Creek five miles west of the point where the Brewster-Terrell county line meets the Rio Grande (at 29°54' N, 102°24' W). It initially crosses steep to gentle terrain with variable soils that support scrub brush and grasses. In its middle reaches, the creek traverses flat terrain with local shallow depressions, clay and sandy loam soils, and water-tolerant hardwoods, conifers, and grasses. Near its mouth the flat terrain includes some local deep and dense dissection. Here the shallow stony soils support oak, juniper, and some mesquite. The stream is reportedly named for Lt. Mason B. Maxon, who discovered a spring in the area in 1871.