Rosillo Creek begins at 29°31' N, 98°22' W, approximately 0.5 miles north of FM 1976, in Northeastern Bexar County, Texas

Bexar County, Texas

As of the census of 2000, there were 1,392,931 people, 488,942 households, and 345,681 families residing in the county. The population density was 1,117 people per square mile . There were 521,359 housing units at an average density of 418 per square mile...

, within the city limits of Windcrest, Texas

Windcrest, Texas

Windcrest is a city in Bexar County, Texas, United States. The population was 5,105 at the 2000 census. It is part of the San Antonio Metropolitan Statistical Area.-Geography:Windcrest is located at ....

, 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

Salado Creek

Salado Creek is a waterway in San Antonio that runs from Northern Bexar County for about to the San Antonio River near Buena Vista.-Watershed:...

 in Southeastern Bexar County, Texas.

History

The Creek was given its name in 1716 by Spanish explorer Domingo Ramón. Rosillo Creek was the site of the Battle of Rosillo Creek

Battle of Rosillo Creek

The Battle of Rosillo Creek was a conflict of the Mexican War of Independence occurring March 29, 1813 in Coahuila y Tejas, approximately nine miles southeast of San Antonio near the confluence of Rosillo Creek and Salado Creek.-The Combatants:The battle was fought between the Republican Army of...

 in 1813.

Sources

• Arc Hydro GIS for Water Resources, David R. Maidment, editor, 2002 GIS for Water Resources, CE394K handouts, Federal Emergency Management Agency
  Federal Emergency Management Agency
  The Federal Emergency Management Agency is an agency of the United States Department of Homeland Security, initially created by Presidential Reorganization Plan No. 1 of 1978 and implemented by two Executive Orders...
  
  (FEMA).

• Texas Water Quality Inventory, Texas Commission on Environmental Quality, Rosillo Creek Basin, 2001.