Rita Blanca Aquiferinteractive map | cross-section

Summary

The Rita Blanca Aquifer, a minor aquifer, underlies the Ogallala Aquifer in the northwest corner of the Texas Panhandle. Groundwater occurs in the coarse-grained sand and gravel layers of the Lytle and Dakota formations as well as in the Exeter Sandstone and the Morrison Formation. The thickness of the aquifer is as much as 250 feet, and freshwater saturated thickness averages about 180 feet. In places, the Rita Blanca Aquifer is hydraulically connected to the Ogallala Aquifer and the underlying Dockum Aquifer. The total thickness of water-yielding rocks in these places is accordingly much greater.

Water in the aquifer is usually fresh, containing less than 1,000 milligrams per liter of total dissolved solids, but very hard; however, some parts of the aquifer produce water that is slightly saline, containing more than 1,000 milligrams per liter of total dissolved solids.

Irrigation accounts for most of the groundwater use from this aquifer, Texline being the only community that uses the aquifer for municipal water supply. Water levels in municipal wells have historically remained stable, whereas water levels in irrigation wells have declined steadily.

Reports

ID Date Type Description
R-315 11/1/1989 TWDB numbered report Evaluation of Ground-Water Resources in Dallam County, Texas
GMA1_DFC_01 7/7/2009 DFC submission Desired future conditions for the Ogallala and Rita Blanca aquifers
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
GR12-005_MAG 8/21/2012 GAM run - MAG Modeled available groundwater for the Ogallala 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
GT15-006_TERS 12/17/2015 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 1
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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