South Central Texas Regional Assessment watersheds map 31https://www.tceq.texas.gov/downloads/water-quality/tmdl/images/31-south-central-regional.jpg/viewhttps://www.tceq.texas.gov/downloads/water-quality/tmdl/images/31-south-central-regional.jpg/@@download/image/31-south-central-regional.jpg
South Central Texas Regional Assessment watersheds map 31