Dockum Aquiferinteractive map | cross-section

Summary

The Dockum Aquifer is a minor aquifer found in the northwest part of the state. It is defined stratigraphically by the Dockum Group and includes, from oldest to youngest, the Santa Rosa Formation, the Tecovas Formation, the Trujillo Sandstone, and the Cooper Canyon Formation. The Dockum Group consists of gravel, sandstone, siltstone, mudstone, shale, and conglomerate. Groundwater located in the sandstone and conglomerate units is recoverable, the highest yields coming from the coarsest grained deposits located at the middle and base of the group. Typically, the water-bearing sandstones are locally referred to as the Santa Rosa Aquifer.

The water quality in the aquifer is generally poor − with freshwater in outcrop areas in the east and brine in the western subsurface portions of the aquifer − and the water is very hard. Naturally occurring radioactivity from uranium present within the aquifer has resulted in gross alpha radiation in excess of the state's primary drinking water standard. Radium-226 and -228 also occur in amounts above acceptable standards.

Groundwater from the aquifer is used for irrigation, municipal water supply, and oil field waterflooding operations, particularly in the southern High Plains. Water level declines and rises have occurred in different areas of the aquifer.

Reports

ID Date Type Description
R-116 5/1/1970 TWDB numbered report Quantity and Chemical Quality of Low Flow in the Prairie Dog Town Fork Red River near Wayside, Texas, February 6-9,1968
R-315 11/1/1989 TWDB numbered report Evaluation of Ground-Water Resources in Dallam County, Texas
R-359 12/1/2003 TWDB numbered report The Groundwater Resources of the Dockum Aquifer in Texas
R-317 1/1/1990 TWDB numbered report Evaluation of Ground-Water Resources in Parts of Loving, Pecos, Reeves, Ward and Winkler Counties, Texas
B-6010 11/1/1960 Groundwater bulletin Geology and Ground-Water Resources of Hale County, Texas
R-015 2/1/1966 TWDB numbered report Ground-Water Resources of Gaines County, Texas
GMA1_DFC_02 6/3/2010 DFC submission Desired future conditions for the Blaine and Dockum aquifers
GMA2_DFC_01 8/5/2010 DFC submission Desired future conditions for the Ogallala, Dockum, and Edwards-Trinity (High Plains) aquifers
GMA3_DFC_01 8/9/2010 DFC submission Desired future conditions for the Capitan Reef Complex, Dockum, Edwards-Trinity (Plateau), Pecos Valley, and Rustler aquifers
GMA6_DFC_01 7/22/2010 DFC submission Desired future conditions for the Blaine, Dockum, Ogallala, and Seymour aquifers
GMA7_DFC_01 7/29/2010 DFC submission Desired future conditions for the Capitan Reef Complex, Dockum, Edwards-Trinity (Plateau), Ellenburger-San Saba, Hickory, Lipan, Marble Falls, Ogallala, and Rustler aquifers
R-356 12/1/2001 TWDB numbered report Aquifers of West Texas
B-6310 12/1/1973 Groundwater bulletin Reconnaissance Investigation of the Ground-Water Resources of the Brazos River Basin, Texas
B-5604 3/1/1956 Groundwater bulletin Ground-Water Resources of the Crane Sandhills, Crane County, Texas
R-047 5/1/1967 TWDB numbered report Occurrence and Quality of Ground Water in Crockett County, Texas
R-050 6/1/1967 TWDB numbered report Ground-Water Resources of Mitchell and Western Nolan Counties, Texas
R-360 2/9/2004 TWDB numbered report Conference Proceedings: Aquifers of the Edwards Plateau
R-337 3/1/1992 TWDB numbered report Evaluation of Water Resources in Parts of the Rolling Prairies Region of North-Central Texas
R-330 7/1/1991 TWDB numbered report Evaluation of Ground-Water Resources in the Southern High Plains of Texas
R-078 5/1/1968 TWDB numbered report Ground-Water Resources of Upton County, Texas
R-145 4/1/1972 TWDB numbered report Water Wells and Ground-Water Chemical Analysis Data, Reagan County, Texas
R-146 4/1/1972 TWDB numbered report Water Well and Ground-Water Chemical Analysis Data, Irion County, Texas
R-166 3/1/1973 TWDB numbered report Ground-Water Resources of Coke County, Texas
R-167 4/1/1973 TWDB numbered report Ground-Water Resources of Hall and Eastern Briscoe Counties, Texas
GR11-009_MP 6/24/2011 GAM run - Management Plan Management plan information for High Plains UWCD No. 1
GT11-010 6/14/2011 GAM task Total pumping estimates for the Ogallala, Edwards-Trinity (High Plains), and Dockum aquifers in High Plains UWCD No. 1
GR11-003_MP 7/29/2011 GAM run - Management Plan Management plan information for Santa Rita UWCD
GR10-026_MP 8/24/2010 GAM run - Management Plan Management plan information for Sterling County UWCD
GT10-025 6/10/2010 GAM task Predictive simulations for the Dockum Aquifer
GR10-007_MP 7/20/2010 GAM run - Management Plan Management plan information for Gateway GCD
GR10-001 6/21/2010 GAM run Predictive simulations for the Dockum Aquifer in Groundwater Management Area 7
GR09-018_MP 7/24/2009 GAM run - Management Plan Management plan information for Llano Estacado UWCD
GR09-017_MP 7/24/2009 GAM run - Management Plan Management plan information for Clear Fork UWCD
GR09-014 9/21/2010 GAM run Predictive simulation for the Dockum Aquifer in Groundwater Management Area 1
GR09-014_Add 9/21/2010 GAM run Predictive simulations for the Dockum Aquifer in Groundwater Management Area 1
GR09-013_MP 8/6/2009 GAM run - Management Plan Management plan information for Wes-Tex GCD
GR09-007_MP 3/17/2009 GAM run - Management Plan Management plan information for Garza County UWCD
GR09-006_MP 3/17/2009 GAM run - Management Plan Management plan information for High Plains UWCD No. 1
GR09-003_MP 1/23/2009 GAM run - Management Plan Management plan information for High Plains UWCD No. 1
GR09-002_MP 1/23/2009 GAM run - Management Plan Management plan information for Garza County UWCD
GR08-075_MP 1/23/2009 GAM run - Management Plan Management plan information for Middle Pecos GCD
GR08-048_MP 1/23/2009 GAM run - Management Plan Management plan information for Lone Wolf GCD
GR10-057_MAG 12/7/2011 GAM run - MAG Modeled available groundwater estimates for the Dockum Aquifer in Groundwater Management Area 6
GR11-021_MP 1/27/2012 GAM run - Management Plan Panhandle GCD Management Plan
GR12-007_MP 6/13/2012 GAM run - Management Plan Permian Basin UWCD Management Plan
GR10-039_MAG 11/18/2011 GAM run - MAG Modeled available groundwater for the Dockum Aquifer in Groundwater Management Area 3
GR12-004_MP 7/20/2012 GAM run - Management Plan Management plan data for Crockett County GCD
GR12-003_MP 7/2/2012 GAM run - Management Plan Management plan data for North Plains GCD
R-380 7/1/2011 TWDB numbered report Aquifers of Texas
GR12-020_MP 10/19/2012 GAM run - Management Plan Management plan data for Glasscock GCD
GR12-019_MP 11/16/2012 GAM run - Management Plan Management plan data for Coke County UWCD
GR12-017_MP 11/16/2012 GAM run - Management Plan Management plan data for Irion County WCD
GR10-040_MAG_Ver2 2/22/2012 GAM run - MAG Modeled available groundwater estimates for the Dockum Aquifer in Groundwater Management Area 7
GR10-035_MAG_Ver3 7/9/2012 GAM run - MAG Modeled available groundwater for the Dockum Aquifer in Groundwater Management Area 2
GR10-019_MAG_Ver2 8/30/2011 GAM run - MAG Managed available groundwater for the Dockum Aquifer in Groundwater Management Area 1
GR12-003_MP_Ver2 9/17/2012 GAM run - Management Plan Revised management plan data for North Plains GCD
GR13-015_MP 6/27/2013 GAM run - Management Plan Management Plan data for Lone Wolf GCD
GR13-021_MP 8/28/2013 GAM run - Management Plan Management plan data for Garza County UWCD
GT13-025_TERS 8/20/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 1
GT13-026_TERS 9/19/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 2
GT13-027_TERS 9/19/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 3
GT13-029_TERS 9/19/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 6
GT13-030_TERS 10/2/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 7
GT13-042_TERS 11/1/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage by county for aquifers in High Plains UWCD No. 1
GR13-030_MP 2/18/2014 GAM run - Management Plan Management plan data for Wes-Tex GCD
GR14-010_MP 3/26/2014 GAM run - Management Plan Management Plan data for Middle Pecos GCD
GR14-002_MP 6/30/2014 GAM run - Management Plan Management plan data for Llano Estacado UWCD
GR14-007_MP 7/25/2014 GAM run - Management Plan Management plan data for Clear Fork GCD
GR14-013_MP 4/10/2015 GAM run - Management Plan Management plan data for Gateway GCD
GT15-006_TERS 12/17/2015 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 1
GR16-001_MP 4/28/2016 GAM run - Management Plan Management plan information for Panhandle GCD
GR16-013_MP 8/31/2016 GAM run - Management Plan Management plan information for Permian Basin UWCD
GR17-012_MP 3/28/2017 GAM run - Management Plan Management plan information for Sterling County UWCD
GR17-022_MP 3/28/2017 GAM run - Management Plan Management plan information for Crockett County GCD
GR17-002_MP 4/4/2017 GAM run - Management Plan Management plan information for Santa Rita UWCD
GR17-008_MP 4/7/2017 GAM run - Management Plan Management plan information for North Plains GCD
GR16-029_MAG 4/20/2017 GAM run - MAG Modeled available groundwater for the aquifers in GMA 1
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