Rosillo Creek begins at 29°31' N, 98°22' W, approximately 0.5 miles north of FM 1976, in Northeastern Bexar County, Texas, within the city limits of Windcrest, Texas, and flows southwestward for eighteen miles through the Rosillo Creek Basin, with an elevation ranging from 265 meters above sea level, to 155 meters above sea level. The vegetation of the basin is mostly mesquite trees and grasses. Rosillo Creek then empties into Salado Creek in Southeastern Bexar County, Texas.
Rosillo Creek Wikipedia
The Creek was given its name in 1716 by Spanish explorer Domingo Ramón. Rosillo Creek was the site of the Battle of Rosillo Creek in 1813.