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Groundwater Management Areas - Major Aquifers - Groundwater Conservation Districts - Regional Water Planning Areas«

0 100 20050Miles

S cale: 1:3,500,000TEX AS W ATER DEV ELOP MENT BOAR D

1700 North Congress Avenue P .O. Box 13231

Austin, Texas 78711-3231 w w w .tw db.texas.gov512-463-7847

DIS CLAIMERTh is map w as generated by th e Texas W ater Development Board using GIS (Geograph ical Information S ystem) softw are. No claims are made to th e accuracy or completeness of th e information sh ow nh erein nor to its suitability for a particular use. Th e scale and location

of all mapped data are approximate. Map date: DEC-2017

MIS S IONTh e Texas W ater Development Board's (TW DB) mission is to provideleadersh ip, planning, financial assistance, information, and education for th e conservation and responsible development of w ater for Texas.

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Plateau(J)

SouthCentral

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North EastTexas (D)

Region H

LowerColorado

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EastTexas

(I)

CoastalBend (N)

Region F

Lavaca(P)

RioGrande

(M)

Region C

Brazos G

LlanoEstacado

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Far WestTexas (E)

Panhandle(A)

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Groundw ater Management Areas w ere created "in order to provide for th e conservation, preservation, protection,rech arging, and prevention of w aste of th e groundw ater, and of groundw ater reservoirs or th eir subdivisions, andto control subsidence caused by w ith draw al of w ater from th ose groundw ater reservoirs or th eir subdivisions,consistent w ith th e objectives of S ection 59, Article X V I, Texas Constitution, groundw ater management areas maybe created..." (Texas W ater Code §35.001) Added by Acts 1995, 74th Leg., ch . 933, §2, eff. S ept. 1, 1995.- Th e responsibility for Groundw ater Management Area delineation w as delegated to th e Texas W ater DevelopmentBoard. (S ection 35.004, Ch apter 35, Title 2, Texas W ater Code)- Th e initial Groundw ater Management Area delineations w ere adopted on December 15, 2002.(356.23, TW DB R ules)

In response to th e drough t of th e 1950s and in recognition of th e need to plan for th e future, th e legislature createdth e Texas W ater Development Board (TW DB) to develop w ater supplies and prepare plans to meet th e state’s future w ater needs. In 1997, th e legislature establish ed a new w ater planning process, based on a “bottom-up,” consensus-driven approach .Coordinating th is w ater planning process are 16 planning groups, one for each regional w ater planning area (see map). Th eplanning groups, each made up of about 20 members, represent a variety of interests, including agriculture, industry,environment, public, municipalities, business, w ater districts, river auth orities, w ater utilities, counties, and pow er generation.Each planning group approved bylaw s to govern its meth ods of conducting business and designated a political subdivision, suchas a river auth ority, groundw ater conservation district, or council of governments, to administer th e planning process and manageany contracts related to developing regional w ater plans.Th e planning groups conduct all functions at open meetings in an openand participatory manner. Th ey h old special public meetings w h en th ey develop th eir scopes of w ork and h old h earings beforeadopting th eir regional w ater plans. Th is public involvement h elps direct th e planning and determine w h ich w ater managementstrategies to recommend. Consensus building w ith in th e planning groups is crucial to ensure sufficient support for adopting th e plan. P lanning group members adopt plans by vote at open meetings in accordance w ith each group’s respective bylaw s.Once th e planning group adopts its regional w ater plan, th e plan is sent to th e TW DB for approval. Th e TW DB th en compilesinformation from th e approved regional w ater plans and oth er sources to develop th e state w ater plan.

Th e Texas W ater Development Board is ch arged w ith th e approvalof groundw ater management plans. All confirmed groundw aterconservation districts in Texas are required to develop and implement a management plan for th e effective management of th eir groundw aterresources. As of 2012, all confirmed districts h ave an approvedgroundw ater management plan or are in th e process of being approved.* Districts th at h ave, in w h ole or part, auth ority as assignedby Ch apter 36 of th e Texas W ater Code. P lease referquestions pertaining to individual districts to th e district th emselves.(h ttp://w w w .tw db.state.tx.us/groundw ater/conservation_districts)** Th e subsidence districts are not Groundw ater ConservationDistricts as defined under Ch apter 36 of th e Texas W ater Code, buth ave th e ability to regulate groundw ater production to prevent landsubsidence. (S enate Bill 1537 from th e 79th Legislative S ession).Districts are arranged in alph abetical order.Dates indicate w h en district w as establish ed by law or election.

Texas h as numerous aquifers capable of producing groundw aterfor h ouseh olds, municipalities, industry, farms, and ranch es. Th eTexas W ater Development Board recognizes 9 major aquifers− aquifers th at produce large amounts of w ater over large areas.- Aquifer Ch ronology (legend order) is by Geologic Age.- S olid colors indicate OU TCR O P areas (exposed rock at surface).- Hatch colored lines indicate S U BCR O P areas (below oth er rock).

GMA - 1GMA - 2GMA - 3GMA - 4GMA - 5GMA - 6GMA - 7GMA - 8GMA - 9GMA - 10GMA - 11GMA - 12GMA - 13GMA - 14GMA - 15GMA - 16

A - P anh andleB - R egion BC - R egion CD - North East TexasE - Far W est TexasF - R egion FG - Brazos GH - R egion HI - East TexasJ - P lateauK - Low er ColoradoL - S outh Central TexasM - R io GrandeN - Coastal BendO - Llano EstacadoP - Lavaca

Groundwater Management Areas Major Aquifers

Groundwater Conservation Districts Regional Water Planning Areas

93. Trinity Glen Rose GCD - 11/5/200294. Upper Trinity GCD - 11/6/2007

96. Victoria County GCD - 8/5/200597. Wes-Tex GCD - 11/5/200298. Wintergarden GCD - 1/17/1998

92. Texana GCD - 11/6/2001

79. Rolling Plains GCD - 1/26/199980. Rusk County GCD - 6/5/200481. San Patricio County GCD - 5/12/200782. Sandy Land UWCD - 11/7/198983. Santa Rita UWCD - 8/19/198984. Saratoga UWCD - 11/7/198985. South Plains UWCD - 2/8/199286. Southeast Texas GCD - 11/2/200487. Southern Trinity GCD - 6/19/200988. Starr County GCD - 1/6/200789. Sterling County UWCD - 11/3/198790. Sutton County UWCD - 4/5/198691. Terrell County GCD - 11/6/2012

95. Uvalde County UWCD - 9/1/1993

46. Live Oak UWCD - 11/7/198947. Llano Estacado UWCD - 11/3/199848. Lone Star GCD - 11/6/200149. Lone Wolf GCD - 2/2/200250. Lost Pines GCD - 11/5/200251. Lower Trinity GCD - 11/7/200652. McMullen GCD - 11/6/200153. Medina County GCD - 8/26/199154. Menard County UWD - 8/14/199955. Mesa UWCD - 1/20/199056. Mesquite GCD - 11/4/198657. Mid-East Texas GCD - 11/5/200258. Middle Pecos GCD - 11/5/200259. Middle Trinity GCD - 5/4/200260. Neches & Trinity Valleys GCD - 11/6/200161. North Plains GCD - 1/2/195562. North Texas GCD - 12/1/200963. Northern Trinity GCD - 5/15/200764. Panhandle GCD - 1/21/195665. Panola County GCD - 11/6/200766. Pecan Valley GCD - 11/6/200167. Permian Basin UWCD - 9/21/198568. Pineywoods GCD - 11/6/200169. Plateau UWC and Supply District - 3/4/197470. Plum Creek CD - 5/1/199371. Post Oak Savannah GCD - 11/5/200272. Prairielands GCD - 9/1/200973. Presidio County UWCD - 8/31/199974. Real-Edwards C and R District - 5/30/1959

76. Red Sands GCD - 11/5/200275. Red River GCD - 9/1/2009

78. Refugio GCD - 11/6/200177. Reeves County GCD - 11/3/2015

P ecos V alley AquiferS eymour AquiferGulf Coast AquiferCarrizo - W ilcox Aquifer (Outcrop)Carrizo - W ilcox Aquifer (S ubcrop)

Ogallala AquiferEdw ards - Trinity (P lateau) Aquifer (Outcrop)Edw ards - Trinity (P lateau) Aquifer (S ubcrop)Edw ards (Balcones Fault Zone) Aquifer (Outcrop)Edw ards (Balcones Fault Zone) Aquifer (S ubcrop)Trinity Aquifer (Outcrop)Trinity Aquifer (S ubcrop)

Hueco - Mesilla Bolsons Aquifer

AS R CD - Aquifer S torage and R ecovery Conservation DistrictCD - Conservation DistrictCR D - Conservation and R eclamation DistrictGCD - Groundw ater Conservation District*R A & GW D - R iver Auth ority & Ground W ater DistrictS D - S upply DistrictU FW CD - U nderground and Fresh W ater Conservation DistrictU W CS D - U nderground W ater Conservation & S upply DistrictU W CD - U nderground W ater Conservation DistrictW CD - W ater Conservation DistrictW D - W ater DistrictGroundw ater Conservation District GIS Data created by th e TexasCommission on Environmental Q uality. For more information,please contact TCEQ at 512-239-1000 or w ras@tceq.texas.gov.

County Boundaries

Subsidence Districts **Harris-Galveston Subsidence DistrictFort Bend Subsidence District

Unconfirmed GroundwaterConservation Districts

+ Pending Election Results# Created by the 84th Legislature& Created by the 85th Legislature

99. Aransas County GCD + #100. Southwestern Travis County GCD + &

43. Kimble County GCD - 5/3/200244. Kinney County GCD - 1/12/200245. Lipan-Kickapoo WCD - 11/3/1987

42. Kenedy County GCD - 11/2/2004

Confirmed Groundwater Conservation Districts *1. Bandera County River Authority & Groundwater District - 11/7/19892. Barton Springs/Edwards Aquifer CD - 8/13/19873. Bee GCD - 1/20/20014. Blanco-Pedernales GCD - 1/23/20015. Bluebonnet GCD - 11/5/20026. Brazoria County GCD - 11/8/20057. Brazos Valley GCD - 11/5/20028. Brewster County GCD - 11/6/20019. Brush Country GCD - 11/3/2009

27. Garza County UWCD - 11/5/199628. Gateway GCD - 5/3/200329. Glasscock GCD - 8/22/198130. Goliad County GCD - 11/6/200131. Gonzales County UWCD - 11/2/199432. Guadalupe County GCD - 11/14/199933. Hays Trinity GCD - 5/3/200334. Headwaters GCD - 11/5/199135. Hemphill County UWCD - 11/4/199736. Hickory UWCD No. 1 - 8/14/198237. High Plains UWCD No.1 - 9/29/195138. Hill Country UWCD - 8/8/198739. Hudspeth County UWCD No. 1 - 10/5/1957

11. Central Texas GCD - 9/24/200512. Clear Fork GCD - 11/5/200213. Clearwater UWCD - 8/21/199914. Coastal Bend GCD - 11/6/200115. Coastal Plains GCD - 11/6/200116. Coke County UWCD - 11/4/198617. Colorado County GCD - 11/6/2007

19. Corpus Christi ASRCD - 6/17/200520. Cow Creek GCD - 11/5/200221. Crockett County GCD - 1/26/199122. Culberson County GCD - 5/2/199823. Duval County GCD - 7/25/200924. Edwards Aquifer Authority - 7/28/199625. Evergreen UWCD - 8/30/196526. Fayette County GCD - 11/6/2001

10. Calhoun County GCD - 11/4/2014

18. Comal Trinity GCD - 6/17/2015

41. Jeff Davis County UWCD - 11/2/199340. Irion County WCD - 8/2/1985