Groundwater Management Area 12

Maps

Map of GMA 12 Administrative Boundary

Map of GMA 12 Groundwater Conservation District boundaries

Map of GMA 12 Major Aquifer boundaries

Map of GMA 12 Minor Aquifer boundaries


Contact Information

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: posgcd@tconline.net

Regional Water Planning Group Representatives:

Region C: David Bailey
Region G: Gary Westbrook
Region H: David Bailey
Region K: Jim Totten

Groundwater Conservation Districts (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


Aquifers(either partially or completely included)

GMA 12 Reports

ID Date Type Description
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
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