San Antonio River Basin

The San Antonio River Basin drains an area of land 4,180 square miles. The basin extends from Kerr and Medina counties in the Texas Hill Country southeast toward the Gulf of Mexico. Courtesy of SARA.

The San Antonio River Basin drains an area of land 4,180 square miles. The basin extends from Kerr and Medina counties in the Texas Hill Country southeast toward the Gulf of Mexico. Courtesy of SARA.

The San Antonio River Basin drains an area of land 4,180 square miles. The basin extends from Kerr and Medina counties in the Texas Hill Country southeast toward the Gulf of Mexico. Courtesy of SARA.