Groundwater Availability Models
Major & Minor Aquifers
- Carrizo-Wilcox Aquifer (northern portion) GAM
- Carrizo-Wilcox Aquifer (central portion) GAM
- Carrizo-Wilcox Aquifer (southern portion) GAM
- Edwards BFZ Aquifer (northern segment) GAM
- Edwards BFZ Aquifer (Barton Springs segment) GAM
- Edwards BFZ Aquifer (San Antonio segment) GAM
- Edwards-Trinity (Plateau) and Pecos Valley Aquifers GAM
- Gulf Coast Aquifer System GAM for GMAs 15 and 16
- Gulf Coast Aquifer System (northern portion) GAM
- Gulf Coast Aquifer System (central portion) GAM
- Gulf Coast Aquifer System (southern portion) GAM
- High Plains Aquifer System GAM
- Hueco-Mesilla Bolsons Aquifer GAM
- Seymour and Blaine Aquifers GAM
- Seymour Aquifer in Haskell, Knox, and Baylor Counties GAM
- Trinity (northern portion) and Woodbine Aquifers GAM
- Trinity (Hill Country) Aquifer GAM
Minor Aquifers
- Queen City and Sparta Aquifers GAM
- Rustler Aquifer GAM
- West Texas Bolsons (Wild Horse Flat, Michigan Flat, Ryan Flat, and Lobo Flat) and Igneous Aquifers GAM
- West Texas Bolsons (Red Light, Green River, and Eagle Flat) Aquifer GAM
- West Texas Bolsons (Presidio and Redford Bolsons) Aquifer GAM
- Yegua-Jackson Aquifer GAM