Aquifer Storage and Recovery Documents

Aquifer Storage and Recovery: Status of Current Projects, Report to the 76th Legislature, 1.2 MB

This legislatively mandated report provides a status update on ASR projects during the 1997-1999 biennium.

H.B. 1989 - Aquifer Storage and Recovery, Report to the 75th Legislature, 4.57 MB

In 1995, the Legislature directed TWDB to prepare a biannual report on pilot aquifer storage and retrieval projects. The report fulfills this requirement. It includes an update on the progress of authorized pilot projects, results of TWDB studies, and anticipated appropriations from general revenues necessary to investigate other aquifers. The report also provides an overview of the ASR process and its historical and potential use in Texas.

Geologic Characterization of and Data Collection in the Corpus Christi Aquifer Storage and Recovery Conservation District and Surrounding Counties, September 2012 (1.84 MB)

John E. Meyer, TWDB

A number of sand layers of varying thicknesses that could potentially serve as reservoirs for aquifer storage and recovery are present in the District. Water quality changes from brackish to saline (total dissolved solids greater than 10,000 milligrams per liter) at approximately 1,000 feet below ground surface in the western third of the District. Arsenic and radionuclides are present in some geologic units. The data collected can be used during the next phase of aquifer storage and recovery evaluation to determine likely well field sites. Drilling test wells will be required to determine site-specific aquifer properties, reservoir lithology and continuity, and water quality.

An Assessment of Aquifer Storage and Recovery in Texas (3.22 MB)

The report presents results of a study to determine why ASR has been successful for at least three Texas utilities but has not been implemented to a greater extent in Texas. It makes public policy recommendations, and discusses the technical and legal changes needed to advance ASR in Texas.

Aquifer Storage Recovery Feasibility Investigation, Step 2, City of Laredo, Texas, 1.2 MB

This is a preliminary report on the feasibility of ASR for the City of Laredo. A limited geochemical and hydrogeologic evaluation indicates that injection of potable water into the Laredo Formation is possible. However, the results of the evaluation indicate that injection will be complicated by low transmissivities. Additionally, the geochemical characteristics of the water and biological activity in the aquifer appear conducive to mineral precipitation in the aquifer. Recommendations to implement a full-scale ASR system are included.

Preliminary Investigation and Feasibility Analysis, Step 1, San Antonio Water System and Bexar Metropolitan Water District, San Antonio, Texas, 9.32 MB

The findings of the Step 1 investigation indicate that there is a beneficial use for ASR in SAWS' and BexarMet's future water strategy. Potable water can be stored in remote parts of the service areas where distribution systems may be limited in capacity. Preliminary analyses indicate that the maximum use of ASR for SAWS and BexarMet would be 28,000 ac-ft/yr and 9,000 ac-ft/yr, respectively. The cost of ASR stored water ranges from $82 per ac-ft to $398 per ac-ft.

Aquifer Storage Recovery Feasibility Investigation, Phase IIB - Full-Scale Testing and Evaluation , Upper Guadalupe River Authority, Kerrville, Texas, 3.70 MB

Following up on preliminary studies, this report summarizes work performed for the Upper Guadalupe River Authority in 1990 and 1991 to determine the feasibility of ASR in Kerrville. The test results were positive and the report discusses the development of an implementation plan.

Aquifer Storage Recovery Feasibility Investigation, Phase IIA, Volume I, Upper Guadalupe River Authority, Kerrville, Texas, 2.22 MB

A Phase I Feasibility Study, completed in April 1988 for the Upper Guadalupe River Authority identified the Hosston-Sligo Sand as showing the highest potential for storing water. However, additional geological data was needed to confirm the preliminary conclusions. This current study was conducted to provide this information. The study included the construction and testing of a 7-inch-diameter production zone monitor well in the Hosston-Sligo Sand at the plant site. Construction methods, testing, and recommendations for future work are presented in the report.

Aquifer Storage Recovery Feasibility Investigation, Phase IIA, Volume II (Appendices), Upper Guadalupe River Authority, Kerrville, Texas, 4.56 MB

Appendices to accompany the 1989 Phase IIA ASR report for the Upper Guadalupe River Authority.

Aquifer Storage Recovery Feasibility Investigation, Phase I Preliminary Assessment, Upper Guadalupe River Authority, Kerrville, Texas, 2.22 MB

This feasibility investigation is the first of a three-phase ASR study and development program for the Upper Guadalupe River Authority. The results of this investigation show that an aquifer storage recovery program appears feasible in Kerrville. Indicators are all positive in the areas of aquifer performance, cost, and institutional/legal concerns. The report recommends a Phase II field investigation to confirm feasibility in a prototype ASR well.