Total Estimated Recoverable StorageSchematic graph showing the difference between unconfined and confined aquifers.

Texas Water Code, §36.108 (d) states that, before voting on the proposed desired future conditions for a relevant aquifer within a groundwater management area, the groundwater conservation districts shall consider the total estimated recoverable storage as provided by the executive administrator of the Texas Water Development Board along with the other factors listed in §36.108. Texas Administrative Code Rule §356.10 defines the total estimated recoverable storage as the estimated amount of groundwater within an aquifer that accounts for recoverable storage scenarios that range between 25 percent and 75 percent of the porosity-adjusted aquifer volume.

The following documents provide information on total estimated recoverable storage. Total estimated recoverable storage reports are listed in the table below.

TWDB Documents

Total estimated recoverable storage and modeled available groundwater, why they are different.

Presentation on the difference between total estimated recoverable storage (TERS) and modeled available groundwater (MAG).

Total Estimated Recoverable Storage

ID Date Type Description
AA 16-01 TERS 12/9/2016 Aquifer assessment - Total Estimated Recoverable Storage Supplemental report of Total Estimated Recoverable Storage for Groundwater Management Area 10
GMA01_TERS_Task15-006 12/17/2015 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 1
GMA01_TERS_Task13-025 8/20/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 1 - Superceded by GAM Task 15-006
GMA02_TERS 9/19/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 2
GMA03_TERS 9/19/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 3
GMA04_TERS 1/15/2014 GAM run - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 4
GMA06_TERS 9/19/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 6
GMA07_TERS 10/2/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 7
GMA08_TERS 1/15/2014 GAM run - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 8
GMA09_TERS 10/2/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 9
GMA10_TERS 8/20/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 10
GMA11_TERS 4/2/2014 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 11
GMA12_TERS_Ver2 5/16/2014 GAM task - Total Estimated Recoverable Storage Revised second version of Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 12
GMA13_TERS 7/15/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 13
GMA14_TERS 6/09/2014 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 14
GMA15_TERS 1/15/2014 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 15
GMA16_TERS 3/28/2013 GAM run - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for aquifers in Groundwater Management Area 16
AA_Leona_Gravel 3/20/2014 Aquifer Assessment - Total Estimated Recoverable Storage Total Estimated Recoverable Storage for the Leona Gravel in Medina Country for Groundwater Management Areas 10 and 13
High Plains UWCD No. 1 TERS 11/1/2013 GAM task - Total Estimated Recoverable Storage Total Estimated Recoverable Storage by county for aquifers in High Plains UWCD No. 1
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