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Water wells by groundwater conservation district

Texas splits groundwater management among local districts. Here are 101 of them with the typical depth of home wells drilled inside their boundaries: the median runs from 53 feet in the Rolling Plains GCD to 1,100 feet in the Southern Trinity GCD. Boundaries are those of TWDB's file current as of November 2019, so districts created later are missing.

Updated every day from Texas Water Development Board driller reports. Last update: November 11, 2026, using the state file of November 10, 2026.

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DistrictMedian depth (ft)Middle half (ft)WellsMain layerCounties
Bandera County River Authority and Groundwater District510450–6401,040Middle TrinityBandera
Barton Springs/Edwards Aquifer Conservation District450373–765224Middle TrinityHays, Travis, Caldwell
Bee Groundwater Conservation District210165–254500—Bee
Blanco-Pedernales Groundwater Conservation District410305–5051,172Middle TrinityBlanco
Bluebonnet Groundwater Conservation District240192–3124,255Evangeline AquiferWalker, Grimes, Austin…
Brazoria County Groundwater Conservation District363225–4633,485Chicot AquiferBrazoria
Brazos Valley Groundwater Conservation District410312–500609Above the WoodbineRobertson, Brazos
Brewster County Groundwater Conservation District363242–578198—Brewster
Brush Country Groundwater Conservation District380300–480657—Jim Hogg, Jim Wells, Brooks
Calhoun County Groundwater Conservation District225183–260315Chicot AquiferCalhoun
Central Texas Groundwater Conservation District350260–4602,618Lower Trinity (Twin Mountains and Travis Peak)Burnet
Clear Fork Groundwater Conservation District11581–13831—Fisher
Clearwater Underground Water Conservation District560199–840518Lower Trinity (Twin Mountains and Travis Peak)Bell
Coastal Bend Groundwater Conservation District200150–2401,080Chicot AquiferWharton
Coastal Plains Groundwater Conservation District410343–465592Chicot AquiferMatagorda
Coke County Underground Water Conservation District180140–220100—Coke
Colorado County Groundwater Conservation District165140–2101,308Evangeline AquiferColorado
Comal Trinity Groundwater Conservation District484400–6001,257Middle TrinityComal
Corpus Christi Aquifer Storage and Recovery Conservation District175160–23934—Nueces, San Patricio
Cow Creek Groundwater Conservation District414280–5701,212Middle TrinityKendall
Crockett County Groundwater Conservation District410326–49033Edwards-Trinity (Plateau) AquiferCrockett
Culberson County Groundwater Conservation District502405–83222—Culberson
Duval County Groundwater Conservation District360300–422154—Duval
Edwards Aquifer Authority450260–6702,802Middle TrinityUvalde, Medina, Bexar…
Evergreen Underground Water Conservation District381320–4402,115—Atascosa, Frio, Wilson…
Fayette County Groundwater Conservation District265190–3641,236Jasper and Catahoula, with the BurkevilleFayette
Fort Bend Subsidence District260205–3202,017Chicot AquiferFort Bend
Garza County Underground Water Conservation District106100–13965Dockum Group (at or just below the base of the Ogallala)Garza
Gateway Groundwater Conservation District12074–160103—Motley, King, Cottle…
Glasscock Groundwater Conservation District270180–31895Edwards-Trinity (Plateau) AquiferGlasscock, Reagan
Goliad County Groundwater Conservation District210170–260405—Goliad
Gonzales County Underground Water Conservation District380304–444501—Gonzales, Caldwell
Guadalupe County Groundwater Conservation District291208–346605—Guadalupe
Harris-Galveston Subsidence District270210–3633,250Chicot AquiferHarris, Galveston
Hays Trinity Groundwater Conservation District510430–650875Middle TrinityHays
Headwaters Groundwater Conservation District540380–660955Middle TrinityKerr
Hemphill County Underground Water Conservation District290188–39036Ogallala AquiferHemphill
Hickory Underground Water Conservation District No. 1185115–300839—Mason, McCulloch, San Saba…
High Plains Underground Water Conservation District No. 1213160–3018,492Ogallala AquiferLamb, Hale, Floyd…
Hill Country Underground Water Conservation District240178–3651,957Middle TrinityGillespie
Hudspeth County Underground Water Conservation District No. 1277109–55534—Hudspeth
Irion County Water Conservation District160115–22891Edwards-Trinity (Plateau) AquiferIrion, Tom Green
Jeff Davis County Underground Water Conservation District380296–52788—Jeff Davis
Kenedy County Groundwater Conservation District677555–78948—Kenedy, Kleberg, Brooks…
Kimble County Groundwater Conservation District260160–340497—Kimble
Kinney County Groundwater Conservation District14080–40085—Kinney
Lipan-Kickapoo Water Conservation District130100–170603—Tom Green, Runnels, Concho
Live Oak Underground Water Conservation District250160–365276—Live Oak
Llano Estacado Underground Water Conservation District200164–2293,504Ogallala AquiferGaines
Lone Star Groundwater Conservation District215187–2653,664Chicot AquiferMontgomery
Lone Wolf Groundwater Conservation District160140–22055Dockum Group (at or just below the base of the Ogallala)Mitchell
Lost Pines Groundwater Conservation District355250–4801,153Above the WoodbineBastrop, Lee
Lower Trinity Groundwater Conservation District206160–2701,533Jasper and Catahoula, with the BurkevillePolk, San Jacinto
McMullen Groundwater Conservation District360225–53557—McMullen
Medina County Groundwater Conservation District535345–820804Middle TrinityMedina
Menard County Underground Water District250160–300152—Menard
Mesa Underground Water Conservation District168135–190140Ogallala AquiferDawson
Mesquite Groundwater Conservation District140100–167118—Collingsworth, Hall, Childress
Mid-East Texas Groundwater Conservation District400304–510987—Leon, Freestone, Madison
Middle Pecos Groundwater Conservation District261188–34192Edwards-Trinity (Plateau) AquiferPecos
Middle Trinity Groundwater Conservation District360180–4352,775Lower Trinity (Twin Mountains and Travis Peak)Erath, Coryell, Bosque…
Neches and Trinity Valleys Groundwater Conservation District460220–6201,247Above the WoodbineAnderson, Cherokee, Henderson
North Plains Groundwater Conservation District500420–545529Ogallala AquiferDallam, Hartley, Lipscomb…
North Texas Groundwater Conservation District478400–5801,578Upper Trinity (Paluxy and Glen Rose)Denton, Cooke, Collin
Northern Trinity Groundwater Conservation District340260–4001,679Upper Trinity (Paluxy and Glen Rose)Tarrant
Panhandle Groundwater Conservation District278200–330928Ogallala AquiferGray, Roberts, Donley…
Panola County Groundwater Conservation District220150–300277—Panola
Pecan Valley Groundwater Conservation District184149–240576—DeWitt
Permian Basin Underground Water Conservation District9075–1201,080Ogallala AquiferMartin, Howard
Pineywoods Groundwater Conservation District260158–425570—Nacogdoches, Angelina
Plateau Underground Water Conservation and Supply District308260–38392—Schleicher
Plum Creek Conservation District260200–305279—Caldwell, Hays
Post Oak Savannah Groundwater Conservation District380245–510979Above the WoodbineMilam, Burleson
Prairielands Groundwater Conservation District400240–5201,763Upper Trinity (Paluxy and Glen Rose)Hill, Ellis, Johnson…
Presidio County Underground Water Conservation District343301–48260—Presidio
Real-Edwards Conservation and Reclamation District400320–460691—Edwards, Real
Red River Groundwater Conservation District27088–390578WoodbineGrayson, Fannin
Red Sands Groundwater Conservation District8075–9569—Hidalgo
Reeves County Groundwater Conservation District260152–35890Pecos Valley AquiferReeves
Refugio Groundwater Conservation District220180–320203—Refugio
Rolling Plains Groundwater Conservation District5342–66129—Haskell, Baylor, Knox
Rusk County Groundwater Conservation District405310–480372—Rusk
San Patricio County Groundwater Conservation District200150–250329—San Patricio
Sandy Land Underground Water Conservation District180160–20289Ogallala AquiferYoakum
Santa Rita Underground Water Conservation District385304–54588Edwards-Trinity (Plateau) AquiferReagan
Saratoga Underground Water Conservation District348260–420400Lower Trinity (Twin Mountains and Travis Peak)Lampasas
South Plains Underground Water Conservation District145120–177456Ogallala AquiferTerry
Southeast Texas Groundwater Conservation District190130–2552,566Chicot AquiferJasper, Newton, Tyler…
Southern Trinity Groundwater Conservation District1,10080–1,18087Lower Trinity (Twin Mountains and Travis Peak)McLennan
Southwestern Travis County Groundwater Conservation District410260–666572Lower TrinityTravis
Starr County Drainage and Groundwater Conservation District460428–49246—Starr
Sterling County Underground Water Conservation District120110–15357Dockum Group (at or just below the base of the Ogallala)Sterling
Sutton County Underground Water Conservation District355300–399126—Sutton
Terrell County Groundwater Conservation District723603–88057—Terrell
Texana Groundwater Conservation District160120–214381Chicot AquiferJackson
Trinity Glen Rose Groundwater Conservation District684540–840418Middle TrinityBexar
Upper Trinity Groundwater Conservation District240200–32013,039Lower Trinity (Twin Mountains and Travis Peak)Montague, Wise, Parker…
Uvalde County Underground Water Conservation District300160–470404—Uvalde
Victoria County Groundwater Conservation District140104–1801,306—Victoria
Wes-Tex Groundwater Conservation District200160–28095Dockum Group (at or just below the base of the Ogallala)Nolan
Wintergarden Groundwater Conservation District435360–575159—La Salle, Dimmit, Zavala

How these numbers are made

We count new and replacement domestic (home) wells whose coordinates fall inside the district boundary. We use the last 10 years when there are at least 30 wells; otherwise all since 2001. The median is the middle well and the middle half runs from the 25th to the 75th percentile.

These are depths of real wells drilled nearby, not a promise about any property. Groundwater can change over short distances and with drought. A licensed water well driller can tell you what to expect on a specific tract.

Read the full methodology · Download the data (CSV, CC BY 4.0)

How to cite

TerraFunded (2026). Texas Well Atlas: Underground. From Texas Water Development Board driller reports and groundwater availability models (data as of November 10, 2026). https://terrafunded.com/wells/districts. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources