Carrizo-Wilcox Aquiferinteractive map | cross-section

Summary

The Carrizo-Wilcox Aquifer is a major aquifer extending from the Louisiana border to the border of Mexico in a wide band adjacent to and northwest of the Gulf Coast Aquifer. It consists of the Wilcox Group and the overlying Carrizo Formation of the Claiborne Group. The aquifer is primarily composed of sand locally interbedded with gravel, silt, clay, and lignite. Although the Carrizo-Wilcox Aquifer reaches 3,000 feet in thickness, the freshwater saturated thickness of the sands averages 670 feet.

The groundwater, although hard, is generally fresh and typically contains less than 500 milligrams per liter of total dissolved solids in the outcrop, whereas softer groundwater with total dissolved solids of more than 1,000 milligrams per liter occurs in the subsurface. High iron and manganese content in excess of secondary drinking water standards is characteristic of the deeper subsurface portions of the aquifer. Parts of the aquifer in the Winter Garden area are slightly to moderately saline, with total dissolved solids ranging from 1,000 to 7,000 milligrams per liter.

Irrigation pumping accounts for slightly more than half the water pumped, and pumping for municipal supply accounts for another 40 percent. Water levels have declined in the Winter Garden area because of irrigation pumping and in the northeastern part of the aquifer because of municipal pumping.

Reports

ID Date Type Description
R-236 7/1/1979 TWDB numbered report Stratigraphic and Hydrogeologic Framework of Part of the Coastal Plain of Texas
B-6105 4/1/1961 Groundwater bulletin Ground-Water Geology of Live Oak County, Texas
B-6520 8/1/1965 Groundwater bulletin Ground-Water Resources of La Salle and McMullen Counties, Texas
LP-214 2/1/1995 Limited publication Evaluation of Ground-Water Quality in Texas Counties Bordering the Rio Grande
CR-0099483279 3/1/2000 Contract report Transmissivity, Hydraulic Conductivity, and Storativity of the Carrizo-Wilcox Aquifer in Texas
GMA11_DFC_01 4/13/2010 DFC submission Desired future conditions for the Carrizo-Wilcox, Queen City, Sparta, and Yegua-Jackson aquifers
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-332 9/1/1991 TWDB numbered report Ground-Water Resources of the Carrizo-Wilcox Aquifer in the Central Texas Region
GMA13_DFC_01 4/9/2010 DFC submission Desired future conditions for the Carrizo-Wilcox, Queen City, and Sparta aquifers
B-6310 12/1/1973 Groundwater bulletin Reconnaissance Investigation of the Ground-Water Resources of the Brazos River Basin, Texas
R-186 9/1/1974 TWDB numbered report Ground-Water Resources of Grimes County, Texas
R-185 9/1/1974 TWDB numbered report Ground-Water Resources of Brazos and Burleson Counties, Texas
R-327 2/1/1991 TWDB numbered report Evaluation of Ground Water Resources in the Vicinity of the Cities of Henderson, Jacksonville, Kilgore, Lufkin, Nacogdoches, Rusk, and Tyler in East Texas
B-6212 7/1/1962 Groundwater bulletin Geology and Ground-Water Resources of Uvalde County, Texas
B-6003 6/1/1960 Groundwater bulletin Geology and Ground-Water Resources of Dimmit County, Texas
B-5911 10/1/1959 Groundwater bulletin Ground-Water Geology of Bexar County, Texas
B-5710 7/1/1957 Groundwater bulletin Ground-Water Geology of Wilson County, Texas
R-019 3/1/1966 TWDB numbered report Ground-Water Resources of Guadalupe County, Texas
R-012 9/1/1975 TWDB numbered report Ground-Water Resources of Caldwell County, Texas
R-004 11/1/1965 TWDB numbered report Ground-Water Resources of Gonzales County, Texas
B-6513 5/1/1965 Groundwater bulletin Availability and Quality of Ground Water in Leon County, 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)
B-6302 5/1/1963 Groundwater bulletin Availability and Quality of Ground Water in Smith County, Texas
B-6517 7/1/1965 Groundwater bulletin Ground-Water Resources of Camp, Franklin, Morris, and Titus Counties, Texas
R-018 3/1/1966 TWDB numbered report Ground-Water Resources of Houston County, Texas
R-027 8/1/1966 TWDB numbered report Ground-Water Resources of Harrison County, Texas
R-037 1/1/1967 TWDB numbered report Ground-Water Resources of Sabine and San Augustine Counties, Texas
R-079 8/1/1968 TWDB numbered report Ground-Water Resources of Wood County, Texas
R-101 10/1/1969 TWDB numbered report Ground-Water Resources of Gregg and Upshur Counties, Texas
R-110 3/1/1970 TWDB numbered report Ground-Water Conditions in Angelina and Nacogdoches Counties, Texas
R-297 4/1/1987 TWDB numbered report Ground-Water Resources of Rusk County, Texas
B-5601 8/1/1956 Groundwater bulletin Geology and Ground-Water Resources of Medina County, Texas
R-032 12/1/1966 TWDB numbered report Ground-Water Resources of Atascosa and Frio Counties, Texas
R-169 4/1/1973 TWDB numbered report Ground-Water Resources of Rains and Van Zandt Counties, Texas
R-056 8/1/1967 TWDB numbered report Availability and Quality of Ground Water in Fayette County, Texas
GMA14_DFC_01 8/25/2010 DFC submission Desired future conditions for the Gulf Coast, Carrizo-Wilcox, Queen City, Sparta, Yegua-Jackson, and River Alluvium aquifers
GT10-020 11/22/2010 GAM task Depth to aquifer layers for the Carrizo-Wilcox, Queen City, and Sparta aquifers in McMullen County
GR10-029_MP 1/4/2011 GAM run - Management Plan Management plan information for Post Oak Savannah GCD
GT10-009 9/3/2010 GAM task Predictive simulations for the Carrizo-Wilcox, Queen City, Sparta, and Yegua-Jackson aquifers in Groundwater Management Area 11
GR10-024_MP 8/18/2010 GAM run - Management Plan Management plan information for Wintergarden GCD
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
GR10-022_MP 7/9/2010 GAM run - Management Plan Management plan information for Uvalde County UWCD
GR10-015_MP 6/15/2010 GAM run - Management Plan Management plan information for Evergreen UWCD
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
GR10-010_MP 7/1/2010 GAM run - Management Plan Management plan information for Live Oak UWCD
GR09-034 6/29/2010 GAM run Predictive simulations for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR09-031_MP 7/9/2010 GAM run - Management Plan Management plan information for Medina County GCD
GR09-021_MP 7/31/2009 GAM run - Management Plan Management plan information for Neches & Trinity Valleys GCD
GR09-020_MP 8/6/2009 GAM run - Management Plan Management plan information for Rusk County GCD
GR09-004 6/29/2010 GAM run Predictive simulations for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR08-089_MP 5/20/2009 GAM run - Management Plan Management plan information for Lost Pines GCD
GR08-087_MP 5/8/2009 GAM run - Management Plan Management plan information for Bluebonnet GCD
GR08-078 10/13/2008 GAM run Predictive simulation for the Carrizo and Middle Wilcox aquifers in Anderson County
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
GR08-071_MP 10/3/2008 GAM run - Management Plan Management plan information for Neches & Trinity Valleys GCD
GR08-062_MP 9/3/2008 GAM run - Management Plan Management plan information for Evergreen UWCD
GR08-050_MP 7/16/2008 GAM run - Management Plan Management plan information for Panola County GCD
GR08-049_MP 7/7/2008 GAM run - Management Plan Management plan information for Pineywoods GCD
GR08-043 9/19/2008 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR08-043_CM 9/29/2008 GAM run Average drawdowns by county for GAM Runs 08-41, 08-42, and 08-43 in Groundwater Management Area 13
GR08-042 9/12/2008 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR08-041 9/17/2008 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR08-038_MP 5/30/2008 GAM run - Management Plan Management plan information for Pecan Valley GCD
GR08-035_MP 5/29/2008 GAM run - Management Plan Management plan information for Fayette County GCD
GR08-002_MP 4/10/2008 GAM run - Management Plan Management plan information for McMullen GCD
GR08-001_MP 3/10/2008 GAM run - Management Plan Management plan information for Bee GCD
GR07-025_MP 9/6/2007 GAM run - Management Plan Management plan information for Guadalupe GCD
GR07-020 9/28/2007 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 11
GR07-017 9/28/2007 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR07-016 6/26/2007 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR07-007_MP 4/3/2007 GAM run - Management Plan Management plan information for Anderson County UWCD
GR06-029 1/11/2007 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR06-029_CM 11/8/2011 GAM run Average drawdowns for the Carrizo-Wilcox, Queen City, and Sparta aquifers based on the analysis completed in GAM Run 06-029
GR06-024_MP 1/3/2007 GAM run - Management Plan Management plan information for Pineywoods GCD
GR06-019 9/7/2006 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Fayette County GCD
GR06-018_MP 8/2/2006 GAM run - Management Plan Management plan information for Plum Creek Conservation District
GR06-009 5/31/2006 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Mid-East Texas GCD
GR06-008 7/6/2006 GAM run Predictive simulation for the Carrizo-Wilcox Aquifer in Rusk County GCD
GR06-005 3/17/2006 GAM run Impacts of pumping increases in the in the Carrizo-Wilcox Aquifer near Jewett, Texas (Leon County)
GR05-036_MP 11/28/2005 GAM run - Management Plan Management plan information for McMullen GCD
GR05-034_MP 9/8/2005 GAM run - Management Plan Management plan information for Wintergarden GCD
GR05-030 7/15/2005 GAM run Recharge information for the Carrizo-Wilcox, Edwards-Trinity (Plateau) and Trinity aquifers in Uvalde County
GR05-031 7/21/2005 GAM run Recharge information for the Carrizo-Wilcox and Trinity aquifers in Medina County
GR05-022 6/3/2005 GAM run Water level information for the Gulf Coast, Carrizo-Wilcox, Queen City, and Sparta aquifers in Live Oak County
GR11-015_MP 11/15/2011 GAM run - Management Plan Management plan information for Anderson County UWCD
GR11-017_MP 11/29/2011 GAM run - Management Plan Management plan information for Guadalupe GCD
GR05-018 4/29/2005 GAM run Water budget information for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Bee, Live Oak, and McMullen counties
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
GR03-033 11/21/2003 GAM run Aquifer recharge values for Neches and Trinity Valleys GCD
GR03-033_CM 3/18/2004 GAM run Clarification memo for GR 03-033
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
GR03-027 9/22/2003 GAM run Water budget and total storage above 4000 depth in Evergreen UWCD
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 sorage data for the Carrizo-Wilcox, Queen City, Sparta, and Gulf Coast aquifers in Fayette County GCD
GR03-015 7/18/2003 GAM run Water budget, storage, and water level drawdown for the Carrizo-Wilcox Aquifer and recharge information for the Gulf Coast Aquifer in Bee GCD
GR03-014 7/28/2003 GAM run Water availability for the Carrizo-Wilcox Aquifer in Henderson, Navarro, and Freestone counties
GR03-013 8/27/2003 GAM run 2010−2030 water level drawdowns for the Carrizo-Wilcox Aquifer in Rusk, Smith, and Gregg counties
GR03-012 7/18/2003 GAM run Water budget, storage, and drawdown in 2050 for the Trinity (Hill Country) and Carrizo-Wilcox aquifers in Medina County GCD
GR03-006 6/18/2003 GAM run Recharge, available storage, estimated and projected declines for the Carrizo-Wilcox Aquifer in Pineywoods GCD
GR08-023 8/29/2008 GAM run Predictive simulation for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 11
GR11-007 6/12/2012 GAM run Estimated drawdown under assumed future pumping for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR11-007_Add 6/12/2012 GAM run Drawdown maps and water budget for GAM run 11-007
GR09-034_Add 6/27/2012 GAM run Predictive simulations for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
GR12-011_MP 6/25/2012 GAM run - Management Plan Management plan information for McMullen GCD
GR12-012_MP 6/25/2012 GAM run - Management Plan Management plan information for Bee GCD
GR12-001_MP 7/2/2012 GAM run - Management Plan Management plan data for Plum Creek CD
GR10-044_MAG 7/9/2012 GAM run - MAG Modeled available groundwater for the Carrizo-Wilcox Aquifer in Groundwater Management Area 12
GR11-010 7/30/2012 GAM run Predictive simulations for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 11
GR10-012_MAG 8/2/2012 GAM run - MAG Modeled available groundwater for the Carrizo-Wilcox, Queen City, and Sparta aquifers in Groundwater Management Area 13
R-380 7/1/2011 TWDB numbered report Aquifers of Texas
GR12-024_MP 12/5/2012 GAM run - Management Plan Management plan information for Pecan Valley GCD
GR10-016_MAG_Ver2 6/7/2012 GAM run - MAG Modeled available groundwater for the Carrizo-Wilcox, Queen City, Sparta, and Yegua-Jackson aquifers in Groundwater Management Area 11
GR08-022_MP_Ver2 8/14/2008 GAM run - Management Plan Management plan information for Gonzales County UWCD
GR13-006_MP 2/11/2013 GAM run - Management Plan Management plan data for Panola County GCD
GR13-002_MP 3/21/2013 GAM run - Management Plan Management plan data for Fayette County GCD
GR12-025_TERS 3/28/2013 GAM run - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 16
GR13-014_MP 6/25/2013 GAM run - Management Plan Management Plan data for Gonzales County UWCD
GR13-013_MP 7/3/2013 GAM run - Management Plan Management plan data for Neches & Trinity Valleys GCD
GR13-003_MP 7/26/2013 GAM run - Management Plan Management Plan Data for Pineywoods GCD
GR13-024_MP 8/28/2013 GAM run - Management Plan Management plan data for Mid-East Texas GCD
GR13-028_MP 8/30/2013 GAM run - Management Plan Management plan data for Bluebonnet GCD
GR10-052_MAG_Ver2 11/18/2011 GAM run - MAG Modeled available groundwater for the Carrizo-Wilcox Aquifer in Groundwater Management Area 14
GT13-036_TERS_Ver2 7/15/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 13
GT13-038_TERS 1/15/2014 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 15
GR14-005_MP 3/26/2014 GAM run - Management Plan Management Plan data for Brazos Valley GCD
GT13-034_TERS 4/2/2014 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 11
GT13-035_TERS_Ver2 5/16/2014 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 12
GT13-037_TERS 6/9/2014 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 14
GR14-011_MP 6/2/2014 GAM run - Management Plan Management plan data for Rusk County GCD
GR03-026 9/8/2003 GAM run Predictive run using pumping distribution provided by Post Oak Savannah GCD
GR14-014_MP 12/12/2014 GAM run - Management Plan Management Plan data for Live Oak UWCD