Surface water-groundwater interaction issues in Texas
Vol. 9 No. 1 (2018). Cover Photo: Sunrise over Coastal Bend Bays & Estuaries Program land. ©2017 John Reuthinger.


surface water
availability models
permitting decisions

How to Cite

Young, S. C., Mace, R. E., & Rubinstein, C. (2018). Surface water-groundwater interaction issues in Texas. Texas Water Journal, 9(1), 129–149.


In Texas, surface water is owned and regulated by the State of Texas, whereas groundwater is owned by respective property owners under the rule of capture. Owners of surface water rights, issued by the state, and groundwater may use and sell their water as a private property right. The Texas Commission on Environmental Quality administers surface water rights, while groundwater conservation districts (where they exist) are primarily responsible for permitting groundwater use. This paper focuses on the complexity of both systems that are designed to manage water resources differently with specific emphasis on where surface water and groundwater interact. Surface water-groundwater interactions have contributed to disputes over the actual ownership and right to water. The available science and the limitations of the models currently used to make water availability and permitting determinations are discussed, as are the investments in field data gathering and interpretation and model enhancements that can lead to better assessments of surface water-groundwater interactions and impacts. More complete science and enhanced models may also help reduce the timeline associated with the permitting of future water supply and use strategies.

Citation: Young SC, Mace RE, Rubinstein C. 2018. Surface water-groundwater interaction issues in Texas. Texas Water Journal. 9(1):129-149. Available from:


Asquith WH (USGS), Thompson DB (Texas Tech University), Cleveland TG (University of Houston), Fang X (Lamar University). 2005. Unit hydrographs estimation for appli¬cable Texas watersheds. Austin (Texas): Texas Department of Transportation. Report 0-4193-4.

Arnold JG, Allen PM. 1999. Automated methods for estimat¬ing baseflow and ground water recharge from streamflow records. Journal of the American Water Resources Associ¬ation. 35(2):411-424.

Barnes VE. 1974. Seguin Sheet: Geologic Atlas of Texas, Scale 1:250,000. Austin (Texas): The University of Texas, Bureau of Economic Geology.

Boroughs C. 2013. User manual for the Upper Rio Grande Water Operations Model (URGWOM). Available from:

Boulton AJ, Marmonier P, Davis JA. 1999. Hydrological exchange and subsurface water chemistry in streams vary¬ing in salinity in south-western Australia. International Journal of Salt Lake Research. 8(4):361-382.

Brandes R, Huston R, Jensen P, Kelly F, Montagna P, Oborny E, Ward G, Wiersema J. 2011. Use of hydrologic data in the development of instream flow recommendations for the environmental flows allocation process and the Hydrolo¬gy-Based Environmental Flow Regime (HEFR) method¬ology, third edition. Senate Bill 3 Science Advisory Com¬mittee for Environmental Flows. Report #SAC-2011-01.

Brodie R, Baskaran S, Hostetler S. 2005. Tools for assessing groundwater-surface water interactions: a case study in the Lower Richmond catchment, NSW. Bureau of Rural Sci¬ences, Canberra.

Carron J, Walker D, Wheeler K, Setzer S, Saunders G, Brown R. 2010. The Lower Colorado River Authority daily river operations model. 2nd joint Federal Interagency Confer¬ence, Las Vegas, Nevada, June 27-July 1, 2010.

Chowdhury A, Wade S, Mace RE, Ridgeway C. 2004. Ground¬water availability of the Central Gulf Coast aquifer system: numerical simulations through 1999. Austin (Texas): Tex¬as Water Development Board. Unpublished report.

Chowdhury AH, Osting T, Furnans J, Mathew R. 2010. Groundwater-surface water interaction in the Brazos River Basin: evidence from lake connection history and chemi¬cal and isotopic compositions. Austin (Texas): Texas Water Development Board. Report 375.

Cook PG, Rodellas V, Stiglitz TC. 2018. Quantifying surface water, porewater, and groundwater interactions using trac¬ers: tracer fluxes, water fluxes, and end-member concentra¬tions. Water Resources Research. 54:2453-2465.

Deeds NE, Yan T, Singh A, Jones T, Kelley V, Knox P, Young S. 2010. Final report: groundwater availability model for the Yegua-Jackson Aquifer. Prepared for the Texas Water Development Board, Austin, Texas. 867 p.

Domel v. City of Georgetown, TX. 1999. Court of Appeals of Texas, Austin. No. 03-98-00544.

Eckhardt K. 2005. How to construct recursive digital filters for baseflow separation. Hydrological Processes. 19:507–515.

[ES] Environmental Stewardship. 2011. Petition of Environ¬mental Stewardship appealing the desired future condi¬tions (DFCs) for the Sparta, Queen City, Carrizo-Wilcox, Calvert Bluff, Simsboro, Hooper, Yegua-Jackson, and Bra¬zos river alluvium aquifers within all areas of Groundwater Management Area 12, submitted by Environmental Stew¬ardship, Bastrop, Texas.

[ES] Environmental Stewardship. 2016. Comments to Lost Pines GCD board of directors and GMA-12 regarding proposed desired future conditions adopted by GMA-12. By Steve Box, Executive Director, Environmental Steward¬ship.

Ewing JE, Jigmond M. 2016. Final numerical model report for the Brazos River Alluvium Aquifer Groundwater Avail¬ability Model. Prepared for the Texas Water Development Board. August 2016.

Federal Register. 2018. Endangered and threatened wildlife and plants; Endangered Species Status for the Texas Hornshell. 50 CRF Part 17 Docket No. FWS-R2-ES-2016-0077; 4500030113. Vol. 83, No. 28. February 9, 2018.

Freeze RA, Cherry JA. 1979. Groundwater. Englewood Cliffs (New Jersey): Prentice Hall. 604 p.

Groundwater Management Area 9, Blanton & Associates, LBG Guyton. 2016. Groundwater Management Area 9 explanatory report for desired future conditions, major and minor aquifers.

Halford KJ, Mayer GC. 2000. Problems associated with estimating ground water discharge and recharge from stream-discharge records. Ground Water. 38:331-342.

Harbaugh AW. 2005. MODFLOW-2005, the U.S. Geological Survey modular ground-water model—the ground-water flow process. Reston (Virginia): U.S. Geological Survey. Techniques and Methods 6-A16.

Harbaugh AW, McDonald MG. 1996. User’s documentation for MODFLOW-96, an update to the U.S. Geological Survey modular finite-difference ground-water flow mod¬el. Reston (Virginia): U.S. Geological Survey. 56 p. Open- File Report 96-485.

Harbaugh AW, Banta ER, Hill MC, McDonald MG. 2000. MODFLOW-2000, the U.S. Geological Survey modular groundwater model—User guide to modularization con¬cepts and the groundwater flow process. Reston (Virginia): U.S. Geological Survey. 121 p. Open-File Report 00–92.

HDR. 2007. Linking the WAM and GAM models—consid¬erations and recommendations. Contract report to the Texas Water Development Board under contract number 2005483557.

Heywood CE, Yager RM. 2003. Simulated ground-water flow in the Hueco Bolson, an alluvial-basin aquifer system near El Paso, Texas. Albuquerque (New Mexico): U.S. Geolog¬ical Survey Water. Resources Investigations. 73 p. Report 02-4108.

House Committee on Natural Resources. 2018. Interim report to the 86th Texas Legislature. A report to the House of Rep¬resentatives 86th Texas Legislature. Available from:¬im/Natural-Resources-Committee-Interim-Report-2018. pdf.

Hutchison W. 2017. Desired future conditions explanatory report (final) Carrizo-Wilcox/Queen City/Sparta aquifers for Groundwater Management Area 13. Cited 22 Febru¬ary 2017.

Hutchison WR. 2006. Groundwater management in El Paso, Texas [dissertation]. [El Paso (Texas)]: The University of Texas at El Paso.

Ingram M. 2017. The Endangered Species Act in Texas: a sur¬vey and history. Austin (Texas): Texas Policy Foundation.

Institute of Hydrology. 1980. Low flow studies. Research report. Wallingford (United Kingdom): Institute of Hydrology. 42 p. Report No 1.

Kelley VA, Mace R M, Deeds N. 2008. Groundwater availabil¬ity modeling. The Texas experience. In: The water report: water rights, water quality and water solutions in the West. 54. Eugene (Oregon): Envirotech Publications.

Kelley VA, Ewing JE, Jones TL, Young SC, Deeds NE, Ham¬lin S. 2014. Final report: updated groundwater availabili¬ty model of the northern Trinity and Woodbine aquifers. Prepared for North Texas Groundwater Conservation Dis¬trict, Northern Trinity Groundwater Conservation Dis¬trict, Prairielands Groundwater Conservation District, and Upper Trinity Groundwater Conservation District. Austin (Texas): INTERA.

Knowles DB, Kennedy RA. 1956. Ground-water resources of the Hueco Bolson northeast of El Paso, Texas. Austin (Tex¬as): Texas Board of Water Engineers. 265 p. Bulletin 5615.

Kondolf GM, Maloney LM, Williams JG. 1987. Effects of bank storage and well pumping on base flow, Carmel riv¬er, Monterey County, California. Journal of Hydrology 91:351-369.

Kunkle GR. 1962. The base-flow duration curve: a technique for study of groundwater discharge from a drainage basin. Journal Geophysical Research. 67(4):1543-1554.

Lim KJ, Engel BA, Tang E, Choi J, Kim K-S, Muthukrish¬nan S, Tripathy D. 2005. Automated WEB GIS based hydrograph analysis tool, WHAT. Journal of the American Water Resources Association. 41(6):1407–1416.

Mace RE, Austin BE, Angle ES, Batchelder R. 2007. Surface water and groundwater–together again? Proceedings for 8th Annual Changing Face of Water Rights in Texas. 2007 June 28-29. San Antonio, TX. State Bar of Texas.

McDonald MG, Harbaugh AW. 1988. A modular three-di¬mensional finite-difference ground-water flow model. In: U.S. Geological Survey, Techniques of Water-Resourc¬es Investigations of the United States Geological Survey, Book 6: Model Techniques, Chapter A1. Washington (District of Columbia): U.S. Geological Survey.

Nathan RJ, McMahon TA. 1990. Evaluation of automated techniques for base flow and recession analyses. Water Resources Research. 26(7):1465–1473.

[NAS] National Academy of Sciences. 2005. The science of instream flows: a review of the Texas Instream Flow Pro¬gram. Washington (District of Columbia): The National Academies Press.

Niswonger RG, Panday S, Ibaraki M. 2011. MOD¬FLOW-NWT, a Newton formulation for MOD¬FLOW-2005. In: U.S. Geological Survey Techniques and Methods, Book 6–A37. Reston (Virginia): U.S. Geologi-cal Survey. 44 p.

Oxtobee J, Novakowski K. 2002. A field investigation of groundwater/surface water interaction in a fractured bed¬rock environment. Journal of Hydrology. 269(3-4):169- 193.

Panday S, Langevin CD, Niswonger RG, Ibaraki M, Hughes JD. 2013. MODFLOW-USG version 1: an unstructured grid version of MODFLOW for simulating groundwater flow and tightly coupled processes using a control volume finite-difference formulation. In: U.S. Geological Survey Techniques and Methods, Book 6–A45. Reston (Virginia): U.S. Geological Survey. 66 p.

Parson Engineering Science, Inc. 1999. Surface water/ground¬water interaction evaluation for 22 Texas river basins. Pre¬pared for the TNRCC. 201p.

Partington D, Brunner P, Simmons CT, Werner AD, Therrein R, Maier HR, Andy GC. 2012. Evaluation of outputs from automated baseflow separation methods against simulated baseflow from a physically based, surface water-groundwa¬ter flow model. Journal of Hydrology. 488-459:28-39.

Pettyjohn WA, Henning R. 1979. Preliminary estimate of ground-water recharge rates, related streamflow and water quality in Ohio. Columbus (Ohio): Ohio State University, Water Resources Center, Report No. 552. 240 p.

Piggott AR, Moin S, Southam C. 2005. A revised approach to the UKIH method for the calculation of baseflow. Hydro¬logical Sciences. 50(5):911-920.

Porter B. 2001. Run of river surveys. A method of measur¬ing salt load accessions to the River Murray on a km by km basis: Groundwater Workshop in 8th Murray-Darling Basin Victor Harbour, SA.

Rassam D, Wernder A. 2008. Review of groundwater-surface¬water interaction modeling approaches and their suitabili¬ty for Australian conditions. eWater Cooperative Research Centre Technical Report, Canberra (Australia): eWater Cooperative Research Centre.

Rhodes KA, Proffitt T, Rowley T, Knappett PSK, Montiel D, Dimova N, Tebo D, Miller GR. 2017. The importance of bank storage in supplying baseflow to rivers flowing through compartmentalized, alluvial aquifers. Water Resources Research. 53. Available from:

Richter BC, Baumgartner JV, Powell J, Braun DP. 1996. A method for assessing hydrologic alteration within ecosys¬tems. Conservation Biology. 10(4):1163-1174.

Rutledge AT. 1998. Computer programs for describing the recession of groundwater discharge and for estimating mean groundwater recharge and discharge from stream¬flow records—update. Reston (Virginia): U.S. Geologi¬cal Survey. USGS Water-Resources Investigations Report 98–4148. Available from:

Sadasivam N. 2017 October 30. How to disappear a river. Tex¬as Observer. Available from:

Sadasivam N. 2018 May 24. No resolution in sight for ranchers and farmers fighting over San Saba River. Texas Observer. Available from:¬tion-in-sight-for-ranchers-and-farmers-fighting-over-san-saba-river/.

Saunders GP. 2006. Low flow gain-loss study of the Colora¬do River in Texas. In: Mace RE, Davidson SC, Angle ES, Mullican III WF, editors. Aquifers of the Gulf Coast of Texas. Austin (Texas): Texas Water Development Board. 293-297 p. Report 365.

Saunders GP. 2009. Low flow gain-loss study of the Colora¬do River in Bastrop County, Texas. In: Hutchison WR, Davidson SC, Brown BJ, Mace, RE, editors. Aquifers of the Upper Coastal Plains of Texas. Austin (Texas): Texas Water Development Board. 161-165 p. Report 374.

Saunders GP. 2012. Gain-loss studies in the Colorado River Basin of Texas: drought of 2011-2012 update. Gulf Coast Association of Geological Societies Transaction. 63:423- 431.

Scanlon BR, Reedy R, Strassberg G, Huang Y, Senay G. 2012. Estimation of groundwater recharge to the Gulf Coast Aquifer in Texas, USA. Prepared for the Texas Water Development Board, Austin Texas. 128 p.

Scanlon BR, Tachovsky JA, Reedy R, Nicot JP, Keese K, Slade, RM, Merwade V, Howard T, Wells GL, Mullins GJ, Ortiz DM. 2005. Groundwater-surface water interactions in Texas. The University of Texas at Austin, Bureau of Eco¬nomic Geology. Final report prepared for Texas Commis¬sion on Environmental Quality. 240 p. Contract no. 7 UT-07 70830.

Scholl MA, Shanley JB, Murphy SF, Willenbring JK, Occhi M, Gonzalez G. 2015. Stable-isotope and solute-chemis¬try approaches to flow characterization in a forested trop¬ical watershed, Luquillo Mountains, Puerto Rico. Applied Geochemistry. 63:484-497.

SCOTUS. 2013. Texas, Plaintiff, versus New Mexico and Colorado, Docket 2O141, Docketed January 10, 2013. Supreme Court of the United States. Available from: http://¬co-and-colorado/.

SKM. 2012. Methods for estimating groundwater discharge to streams—summary of field trials. Prepared for CSIRO and funded by the Water Smart Australia program, Syd¬ney, Australia. 67 p.

Slade RM Jr, Bentley JT, Michaud D. 2002. Results of stream¬flow gain-loss studies in Texas, with emphasis on gains and losses to major and minor aquifers. 131 p. Texas 2000: USGS Open File Report 02-068m.

Sloto RA, Crouse MY. 1996. HYSEP-A computer program for streamflow hydrograph separation and analysis. Lemoyne (Pennsylvania): U.S. Geological Survey. 46 p. Water-Re¬sources Investigations Report 96–4040. Available from:

Smith BA, Hunt BB, Andrews AG, Watson JA, Gary MO, Wierman DA, Broun AS. 2015. Surface water-groundwa¬ter interactions along the Blanco River of central Texas, USA. Environmental Earth Sciences. 74(12):1-10.

Straus J. 2017. Interim committee charges Texas House of Rep¬resentatives 85th Legislature, Speaker Joe Straus, October 2017. Available from:

[TCEQ] Texas Commission on Environmental Quality. 2015. Texas Commission on Environmental Quality Inves¬tigation Report Report Number 1254241. WR_164_ Menard_CO_2015026_WR Complaint.

[TCEQ] Texas Commission on Environmental Quality. 2017. Instruction for completing the water rights permitting application, form TCEQ-10214A (revised 07/19/2017).

[TCEQ, TPWD, TWDB] Texas Commission on Environ¬mental Quality, Texas Parks and Wildlife Department, and the Texas Water Development Board. 2008. Texas instream flow studies: technical overview. Austin (Texas): Texas Water Development Board. Report 369.

[TLO] Texas Legislature Online. 2018. Rio Grande Com¬pact Violations. Available from: 6124-448c-8b04-12ff8fc95e8b.PDF

[TWDB] Texas Water Development Board. 2012. Memo¬randum from Larry French, Joe Reynolds, and Shirley Wade to Board members dated June 13, 2012. Briefing, discussion, and possible action on appeals on the reason¬ableness of the desired future conditions adopted by the groundwater conservation districts in Groundwater Man¬agement Area 12 for the Sparta, Queen City, Carrizo-Wil¬cox, Calvert Bluff, Simsboro, Hooper, Yegua-Jackson, and Brazos River Alluvium. Austin (Texas): Texas Water Devel¬opment Board.

[TWDB] Texas Water Development Board. 2016a. Texas aqui¬fers study: groundwater quantity, quality and contributions to surface water. Austin (Texas): Texas Water Development Board. Unnumbered report.

[TWDB] Texas Water Development Board. 2016b. Ground¬water availability modeling, TWDB Information Sheet. Austin (Texas): Texas Water Development Board.

Todd DK. 1955. Ground-water flow in relation to a flooding stream. Proceedings of the American Society of Civil Engi¬neers. 81(628):1-20.

Toll N, Fratesi B, Green R, Bertetti P, Nunu R. 2017. Water-re¬source management of the Devils River Watershed, Final Report. Prepared by Southwest Research Institute, San Antonio, Texas.

Votteler TH. 2017 June 15. Texas surface water and whoop¬ing crane dispute. The Water Report. Issue 160. p. 1-7. Available from:¬teler_TWR_160.pdf.

Votteler TH. 1998. The little fish that roared: the Endangered Species Act, state groundwater law, and private property rights collide over the Texas Edwards Aquifer. Environ¬mental Law. 28(4): 845-879. Available from:

URS Corporation and Baer Engineering. 2007. Monitoring data report from April 2006 to December 2007 for the LSWP shallow wells installed in Wharton and Matagorda counties, Texas. Prepared for the Lower Colorado River Authority, Austin, Texas.

[USCA] U.S. Court of Appeals for the Fifth Circuit. 2014. The Aransas Project. Case 13-40317. Date Filed: 12/15/2014. Available from: pub/13/13-40317-CV0.pdf.

[USGS] U.S. Geological Survey. 2017. Metadata for base-flow index grid for the conterminous United States. Available from:

Wade SC, Ballew N. 2017. GAM Run 17-030 MAG: Modeled available groundwater for the Carrizo-Wilcox, Queen City, Sparta, Yegua-Jackson, and Brazos River alluvium aquifers in Groundwater Management Area 12. Austin (Texas): Texas Water Development Board.

Wahl KL, Wahl TL. 1995. Determining the flow of Comal Springs at New Braunfels, Texas. Proceedings of Texas Water 95. 1995 August 16–17. San Antonio, Texas. Amer¬ican Society of Civil Engineers. p. 77-86.

Winter TC, Harvey JW, Franke OL, Alley WM. 1998. Groundwater and surface water—a single resource. Den¬ver (Colorado): United States Geological Survey. 79 p. Circular 1139.

Wolock DM. 2003a. Flow characteristics at U.S. Geological Survey streamgages in the conterminous United States: USGS, Open-File Report 03-146. Available from:

Wolock DM. 2003b. Hydrologic landscape regions of the United States raster digital data. U.S. Geological Survey Open-File Report 03-145 and digital data set. Available from:

Wolock DM, Winter TC, McMahon G. 2004. Delineation and evaluation of hydrologic-landscape regions in the United States using geographic information system tools and multivariate statistical analysis. Environmental Man¬agement. 34(1):71-88.

Wurbs RA. 2001. Reference and user’s manual for the water rights analysis package (WRAP). 3rd edition. College Sta¬tion (Texas): Texas A&M University, Texas Water Resourc¬es Institute. Technical Report 180.

Young SC, Kelley V, editors. 2006. A site conceptual model to support the development of a detailed groundwater model for Colorado, Wharton, and Matagorda Counties. Lower Colorado River Authority, Austin, Texas.

Young SC, Kelley V, Budge T, Deeds N, Knox P. 2009. Devel¬opment of the LCRB groundwater flow model for the Chicot and Evangeline aquifers in Colorado, Wharton, and Matagorda counties. Austin (Texas): URS Corpora¬tion.

Young SC, Jones T, Jigmond M. 2017. Field studies and updates to the Central Carrizo-Wilcox, Queen City, and Sparta GAM to improve the quantification of surface water-groundwater interaction in the Colorado River Basin (Final Report). Prepared for the Texas Water Devel¬opment Board, Austin, Texas.

Young SC, Jigmond M, Jones T, Ewing T. 2018. Groundwa¬ter availability model for the central portion of the Spar¬ta, Queen City, and the Carrizo-Wilcox Aquifers (Final Report). Prepared for the Texas Water Development Board, Austin, Texas.

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