Water wells in the Terrell County Groundwater Conservation District

Q: What does a groundwater conservation district do?

In Texas, districts are the local authority over groundwater: they can require registration or permits for new wells, set spacing from other wells and property lines, and limit pumping. Each district writes its own rules, so ask the Terrell County Groundwater Conservation District before drilling inside it.

Home water wells inside the Terrell County Groundwater Conservation District (Terrell County, Texas) are typically 603 to 880 feet deep (median 723 ft, 57 wells reported since 2001). Drillers reported 3 new home wells in 2025, less than half the peak of 7 in 2007. Estimated cost of a complete well at the median depth: $20,500 to $50,000.

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

See the wells and layers at an exact point

Under the center of the Terrell County GCD

District boundary from TWDB's file current as of November 2019. Later changes are not shown.

Home wells in and around the Terrell County GCD

Each dot is a home well from a state driller report, colored by depth. Tap one for its details and official report. Tap an empty spot to see what is under that point.

See underground

Well depth (ft)

<100
100
200
300
400
600
800+

Dark line: the district boundary (TWDB, 2019)

Key figures

Typical depth (middle half): 603 to 880 feet
Median depth: 723 feet
Deepest 10% are past: 904 feet
Water level (median): 514 feet; 50 wells
Yield (median): 10 gpm; 46 wells, gallons per minute
Wells used: 57; Since 2001
Counties: 1
All years on file: 57; median 723 ft, since 2002
Confidence: Standard (30 or more wells)

When the wells were finished, the water stood a median 514 feet below the surface (50 wells).

District boundary from TWDB's file current as of November 2019. Later changes are not shown.

New home wells per year

Drillers reported 3 new home wells in 2025, less than half the peak of 7 in 2007.

Domestic wells with a depth, by the year they were finished. 2026 is still in progress.

Show the data table

Year	Wells
2002	5
2003	4
2004	2
2005	1
2007	7
2008	4
2009	2
2010	1
2011	1
2012	2
2013	2
2014	1
2016	2
2017	1
2018	2
2019	1
2020	1
2021	2
2022	7
2023	2
2024	3
2025	3
2026	1

Counties

Terrell County

Depth over time

There are not enough wells in both 2003 to 2007 and 2021 to 2025 (at least 30 in each) to say with confidence whether wells in the district are getting deeper. For reference, the median was 534 feet in 2001 to 2005 (12 wells) and 710 feet in 2021 to 2025 (17 wells).

Period	Median depth (ft)	Wells
2001–2005	534	12
2006–2010	880	14
2011–2015	under 10 wells	6
2016–2020	under 10 wells	7
2021–2025	710	17
2026	under 10 wells	1

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Common questions

How deep are wells in the Terrell County GCD?

Home water wells inside the Terrell County Groundwater Conservation District (Terrell County, Texas) are typically 603 to 880 feet deep (median 723 ft, 57 wells reported since 2001).

What does a groundwater conservation district do?

In Texas, districts are the local authority over groundwater: they can require registration or permits for new wells, set spacing from other wells and property lines, and limit pumping. Each district writes its own rules, so ask the Terrell County Groundwater Conservation District before drilling inside it.

What a well costs here

At the median depth for the district (723 feet), a complete home well would cost roughly $20,500 to $50,000: $25 to $60 per foot for drilling, casing and seal, plus $2,500 to $6,500 for the pump, pressure tank, controls and hookup at the well. Across the whole middle half of depths (603 to 880 feet) the range runs from $17,500 to $59,500. This is TerraFunded's estimate from published Texas prices, not a quote, and it leaves out trenching and the line to the house. Get prices from at least two licensed drillers.

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/terrell-groundwater-conservation-district. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.