SAUS CREEK. Saus Creek, also known as Willow Creek, rises a mile north of U.S. Highway 277 and eight miles east of Eagle Pass in central Maverick County (at 28°44' N, 100°21' W) and runs south nineteen miles to its mouth on the Rio Grande, two miles southwest of El Indio (at 28°30' N, 100°21' W). Low rolling hills in the area of the upper creek are surfaced by clay that supports chaparral, mesquite, and grasses. The terrain changes to low relief and then to flat land with locally shallow depressions, where clay supports pecan and other hardwoods in its mid-section and water-tolerant hardwoods, conifers, and grasses in its lower reaches. The name is the Spanish word for sauce.