Groundwater Management Area 12
Groundwater Management Area 12 Webpage
Contact Information
Groundwater Management Area 12 Public Comment Form (posted 12/4/19)
Post Oak Savannah Groundwater Conservation District
Gary Westbrook
General Manager
P.O. Box 92
Milano, Texas 76556
Telephone: 512-455-9900
Fax: 512-455-9909
Email: gwestbrook@posgcd.org
Regional Water Planning Group Representatives:
Region C: David Bailey
Region G: Gary Westbrook
Region H: David Bailey
Region K: Jim Totten
2021 Joint Planning Desired future conditions and modeled available groundwater
Summary of Desired Future Conditions for GMA 12
Summary of Modeled Available Groundwater for GMA 12 by Groundwater Conservation District
Summary of Modeled Available Groundwater for GMA 12 by County
Groundwater Conservation Districts (5 either partially or completely included)
- Brazos Valley Groundwater Conservation District
- Fayette County Groundwater Conservation District
- Lost Pines Groundwater Conservation District
- Mid-East Texas Groundwater Conservation District
- Post Oak Savannah Groundwater Conservation District
Additional Groundwater Conservation District Information
Exempt Groundwater Use Estimates
Aquifers(either partially or completely included)
Major Aquifers
Minor Aquifers
Component Counties
GMA 12 Reports
| ID | Date | Type | Description |
|---|---|---|---|
| GR17-030_MAG | 12/15/2017 | GAM run - MAG | Modeled available groundwater for the aquifers in Groundwater Management Area 12 |
| HA-05 | 1/1/1997 | Hydrologic atlas | Water Quality in the Sparta Aquifer |
| HA-06 | 1/1/1997 | Hydrologic atlas | Water Quality in the Queen City Aquifer |
| CR-0099483279 | 3/1/2000 | Contract report | Transmissivity, Hydraulic Conductivity, and Storativity of the Carrizo-Wilcox Aquifer in Texas |
| GMA12_DFC_01 | 8/11/2010 | DFC submission | Desired future conditions for the Carrizo-Wilcox, Queen City, Sparta, Yegua-Jackson, and Brazos River Alluvium aquifers |
| R-295 | 10/1/1986 | TWDB numbered report | Hydrology of the Jasper Aquifer in the Southeast Texas Coastal Plain |
| R-332 | 9/1/1991 | TWDB numbered report | Ground-Water Resources of the Carrizo-Wilcox Aquifer in the Central Texas Region |
| B-6310 | 12/1/1973 | Groundwater bulletin | Reconnaissance Investigation of the Ground-Water Resources of the Brazos River Basin, Texas |
| R-185 | 9/1/1974 | TWDB numbered report | Ground-Water Resources of Brazos and Burleson Counties, Texas |
| R-067 | 12/1/1967 | TWDB numbered report | Reconnaissance of the Chemical Quality of Surface Waters of the Trinity River Basin, Texas |
| R-115 | 4/1/1970 | TWDB numbered report | Time of Travel of Translatory Waves on the Brazos, Leon and Little Rivers, Texas |
| B-6513 | 5/1/1965 | Groundwater bulletin | Availability and Quality of Ground Water in Leon County, Texas |
| R-041 | 3/1/1967 | TWDB numbered report | Ground Water in the Flood-Plain Alluvium of the Brazos River, Whitney Dam to Vicinity of Richmond, Texas |
| R-350 | 11/1/1999 | TWDB numbered report | Changes in Groundwater Conditions in the Edwards and Trinity Aquifers, 1987-1997, for Portions of Bastrop, Bell, Burnet, Lee, Milam, Travis, and Williamson Counties, Texas |
| R-150 | 8/1/1972 | TWDB numbered report | Ground-Water Conditions in Anderson, Cherokee, Freestone, and Henderson Counties, Texas |
| R-109 | 3/1/1970 | TWDB numbered report | Ground-Water Resources of Bastrop County, Texas |
| R-020 | 3/1/1966 | TWDB numbered report | Ground-Water Resources of Lee County, Texas |
| R-160 | 11/1/1972 | TWDB numbered report | Ground-Water Resources of Navarro County, Texas |
| LP-208 | 1/1/1989 | Limited publication | A Digital Model of the Carrizo-Wilcox Aquifer Within the Colorado River Basin of Texas (cross-section figures linked here) |
| R-071 | 3/1/1968 | TWDB numbered report | Reconnaissance of the Chemical Quality of the Surface Waters of the Colorado River Basin, Texas |
| R-056 | 8/1/1967 | TWDB numbered report | Availability and Quality of Ground Water in Fayette County, Texas |
| GMA12_DFC_02 | 6/30/2011 | DFC submission | Desired future conditions for the Yegua-Jackson Aquifer |
| GR10-029_MP | 1/4/2011 | GAM run - Management Plan | Management plan information for Post Oak Savannah GCD |
| GR16-015_MP | 8/31/2017 | GAM run - Management Plan | Management plan information for Post Oak Savannah GCD |
| GT10-012 | 9/9/2010 | GAM task | Predictive simulations for the Yegua-Jackson Aquifer |
| GT10-024 | 7/16/2010 | GAM task | Analysis of pumping information for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 12 |
| GR10-014_MP | 6/9/2010 | GAM run - Management Plan | Management plan information for Lost Pines GCD |
| GR10-013_MP | 10/4/2011 | GAM run - Management Plan | Management plan information for Brazos Valley GCD |
| GR08-089_MP | 5/20/2009 | GAM run - Management Plan | Management plan information for Lost Pines GCD |
| GR08-077_MP | 2/25/2009 | GAM run - Management Plan | Management plan information for Mid-East Texas GCD |
| GR08-073_MP | 12/9/2008 | GAM run - Management Plan | Management plan information for Brazos Valley GCD |
| GR08-035_MP | 5/29/2008 | GAM run - Management Plan | Management plan information for Fayette County GCD |
| GR06-019 | 9/7/2006 | GAM run | Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Fayette County GCD |
| GR06-009 | 5/31/2006 | GAM run | Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Mid-East Texas GCD |
| GR06-005 | 3/17/2006 | GAM run | Impacts of pumping increases in the in the Carrizo-Wilcox Aquifer near Jewett, Texas (Leon County) |
| GR05-005 | 3/31/2005 | GAM run | Post Oak Savannah GCD, water budget, water levels, drawdown through 2050, 2002 State Water Plan pumping summary, and interaction with the Brazos River Alluvium Aquifer |
| GR04-004 | 3/5/2004 | GAM run | Statistical summary and map of storage coefficient for the Simsboro Aquifer in Burleson County |
| GR04-003 | 2/9/2004 | GAM run | Statistical summary and map of transmissivity of the Simsboro Aquifer in Burleson County |
| GR04-001 | 4/22/2004 | GAM run | Recharge amounts and maximum pumping needed to maintain current water levels in Mid-East Texas GCD |
| GR03-031 | 12/9/2003 | GAM run | Recharge amounts and maximum pumping that allows maintaining current water levels in Mid-East Texas GCD |
| GR03-030 | 3/5/2004 | GAM run | Predictive run using Region C provided pumping |
| GR03-028 | 9/19/2003 | GAM run | Predictive run using pumping data provided by Post Oak Savannah GCD |
| GR03-024 | 9/5/2003 | GAM run | Total water availability in Henderson, Navarro, and Freestone counties |
| GR03-019 | 8/25/2003 | GAM run | Recharge information and total storage above 3000 feet using a predictive simulation in Milam and Burleson counties |
| GR03-017 | 8/18/2003 | GAM run | Recharge and total storage data for the Carrizo-Wilcox, Queen City, Sparta, and Gulf Coast aquifers in Fayette County GCD |
| GR03-014 | 7/28/2003 | GAM run | Water availability for the Carrizo-Wilcox Aquifer in Henderson, Navarro, and Freestone counties |
| AA10-20_MAG | 7/9/2012 | Aquifer assessment MAG | Modeled available groundwater for the Brazos River Alluvium Aquifer in Groundwater Management Area 12 |
| GR10-044_MAG | 7/9/2012 | GAM run - MAG | Modeled available groundwater for the Carrizo-Wilcox Aquifer in Groundwater Management Area 12 |
| GR10-045_MAG | 7/9/2012 | GAM run - MAG | Modeled available groundwater for the Queen City Aquifer in Groundwater Management Area 12 |
| GR10-046_MAG | 7/9/2012 | GAM run - MAG | Modeled available groundwater for the Sparta Aquifer in Groundwater Management Area 12 |
| GR10-060_MAG | 7/9/2012 | GAM run - MAG | Modeled available groundwater for the Yegua-Jackson Aquifer in Groundwater Management Area 12 |
| GR13-002_MP | 3/21/2013 | GAM run - Management Plan | Management plan data for Fayette County GCD |
| GR13-024_MP | 8/28/2013 | GAM run - Management Plan | Management plan data for Mid-East Texas GCD |
| GR14-005_MP | 3/26/2014 | GAM run - Management Plan | Management Plan data for Brazos Valley GCD |
| GT13-035_TERS_Ver2 | 5/16/2014 | GAM task - Total Estimated Recoverable Storage | Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 12 |
| GR03-026 | 9/8/2003 | GAM run | Predictive run using pumping distribution provided by Post Oak Savannah GCD |
| GR16-014_MP | 3/17/2017 | GAM run - Management Plan | Management plan information for Lost Pines GCD |
| GR17-019_MP | 2/2/2018 | GAM run - Management Plan | Management plan information for Fayette County GCD |
| GR18-019_MP | 7/6/2018 | GAM run - Management Plan | Management plan information for Brazos Valley GCD |
| GR18-021_MP | 1/25/2019 | GAM run - Management Plan | Management plan information for Brazos Valley GCD |
| GR18-020_MP | 2/11/2019 | GAM run - Management Plan | Management plan information for Mid-East Texas GCD |
| GR22-007_MP | 6/28/2022 | GAM run - Management Plan | Management plan information for Post Oak Savannah GCD |
| GR22-008_MP | 8/12/2022 | GAM run - Management Plan | Management plan information for Lost Pines GCD |
| GR21-017_MAG | 11/1/2022 | GAM run - MAG | Modeled available groundwater estimates for the aquifers in Groundwater Management Area 12 |
| GR23-009_MP | 6/2/2023 | GAM run - Management Plan | Management plan information for Brazos Valley GCD |
| GR23-008_MP | 06/12/2023 | GAM run - Management Plan | Management plan information for Fayette County GCD |