State
- Palmer Drought Severity Index
- Texas Water Development Board (TWDB)
- TWDB and Groundwater District Maps
- TWBD Monitor Wells
- Groundwater Management Area #9 (GMA #9)
- Texas Commission on Environmental Quality
- TCEQ Monitor Wells
- Texas Department of Licensing and Regulation
GMA#9 Members
- GMA-9 Website
- Bandera County River Authority and GCD
- Barton Springs/Edwards Aquifer CD
- Blanco-Pedernales GCD
- Comal Trinity GCD
- Edwards Aquifer Authority
- Hays Trinity GCD
- Headwaters GCD
- Medina County GCD
- Trinity Glen Rose GCD