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How deep are water wells in Quinlan, Texas?

Home water wells in and around Quinlan, Texas are typically 174 to 284 feet deep (median 216 ft, 31 wells drilled in the last 10 years). All the wells the model covers draw from younger formations above the Woodbine, according to the state's Northern Trinity and Woodbine model (TWDB). Estimated cost of a complete well at the median depth: $8,000 to $19,500.

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 pointHunt County
What is under Quinlan, TexasUnderground column at the center of Quinlan: median well 216 ft, middle half 174 to 284 ft, water at 60 ft, and the layers of the state's model with their thickness.Above the Woodbine: 0 to 3,313 ftAbove the Woodbinecontinues to 7,269 ft0100200300400ftGround level · 509 ft above sea levelMedian well: 216 ftWater standing in the well from 60 ftWater level60 ftMiddle half174–284 ftMedian well216 ft

Under Quinlan, Hunt County

Layers at the center of Quinlan from TWDB's Northern Trinity and Woodbine model (quarter mile cells, summarized here to about 1.3 miles), at true depth scale. The well and the water are the median of 31 real wells.

Home wells in and around Quinlan

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+

Dashed line: Quinlan and about 2 miles around it

Key figures

Typical depth (middle half)
174 to 284 feet
Median depth
216 feet
Deepest 10% are past
310 feet
Water level (median)
60 feet
30 wells
Yield (median)
25 gpm
30 wells, gallons per minute
Wells used
31
In the last 10 years
Inside the city limits
2
the rest within 2 miles
All years on file
69
median 220 ft, since 2003
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 60 feet below the surface (30 wells), well above the bottom: the typical well holds about 156 feet of water.

What is under Quinlan, TexasUnderground column at the center of Quinlan: median well 216 ft, middle half 174 to 284 ft, water at 60 ft, and the layers of the state's model with their thickness.Above the Woodbine: 0 to 3,313 ftAbove the Woodbinecontinues to 7,269 ft0100200300400ftGround level · 509 ft above sea levelMedian well: 216 ftWater standing in the well from 60 ftWater level60 ftMiddle half174–284 ftMedian well216 ft
Layers at the center of Quinlan from TWDB's Northern Trinity and Woodbine model (quarter mile cells, summarized here to about 1.3 miles), at true depth scale. The well and the water are the median of 31 real wells.

Which formation do wells in Quinlan draw from?

All the wells the model covers draw from younger formations above the Woodbine, according to the state's Northern Trinity and Woodbine model (TWDB).

Layer (state's model)ShareWellsTypical depth (ft)
Above the Woodbine100%28170–280

For 100% of these wells the report says where the water enters (the screen or the open hole), and we use the middle of that interval.

The layers under the center of Quinlan

From the state's model, at 509 feet above sea level. These are the model's depths at that one point, not those of any particular lot.

Depths in feet below ground.
Layer (state's model)Top (ft)Bottom (ft)Thickness (ft)
Above the Woodbineshale, chalk and marl03,3133,313
Woodbinesandstone with shale3,3133,964651
Washita and Fredericksburglimestone, marl and clay3,9645,0811,117
Upper Trinitysandstone, limestone and marl5,0815,765684
Lower Trinitysandstone with shale and limestone5,7657,2691,504

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 and around Quinlan are getting deeper. For reference, the median was 192 feet in 2006 to 2010 (17 wells) and 216 feet in 2021 to 2025 (17 wells).

PeriodMedian depth (ft)Wells
2001–2005under 10 wells9
2006–201019217
2011–2015under 10 wells9
2016–202021514
2021–202521617
2026under 10 wells3

What a well costs in Quinlan

At the median depth for Quinlan (216 feet), a complete home well would cost roughly $8,000 to $19,500: $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 (174 to 284 feet) the range runs from $7,000 to $23,500. 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.

Where it sits

Nearby places

Median depth of home wells in each place.

All Texas cities and towns

Common questions

How deep do you have to drill a well in Quinlan, Texas?

Home water wells in and around Quinlan, Texas are typically 174 to 284 feet deep (median 216 ft, 31 wells drilled in the last 10 years). One in ten goes past 310 feet. The depth a given tract needs depends on where it sits and what layers the driller hits.

What aquifer or formation do wells in Quinlan draw from?

All the wells the model covers draw from younger formations above the Woodbine, according to the state's Northern Trinity and Woodbine model (TWDB). This is an estimate from the state's regional model, not a survey of the lot.

How much does a water well cost in Quinlan?

At the median depth (216 feet), a complete well would cost roughly $8,000 to $19,500, by TerraFunded's estimate from published Texas driller prices. The real price comes from a licensed driller's quote.

How deep is the water in Quinlan?

When the wells were finished, the water stood a median 60 feet below the surface (30 wells), well above the bottom: the typical well holds about 156 feet of water. The level moves with drought and from one well to the next.

Do I need a permit to drill a well in Quinlan?

In the state's boundary file (current as of November 2019) no groundwater conservation district covers Quinlan. Districts created or enlarged since then are missing from that file, so confirm with the county or TWDB before drilling. Anywhere in Texas the well must be drilled by a licensed driller, who files the report with the state.

How these numbers are made

We count new and replacement domestic (home) wells whose coordinates fall inside the place boundary or within 2 miles of it. 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.

To tell which layer a well draws from, we take the ground elevation at its location, subtract the depth of the interval where water enters (or the bottom of the hole when the report does not give one) and see which layer of the state's model that point falls in.

For 100% of these wells the report says where the water enters (the screen or the open hole), and we use the middle of that interval.

How well it works: In 7,977 wells in the area of the state's Northern Trinity and Woodbine model (North and Central Texas) where the State of Texas recorded the aquifer, our estimate of the formation the well draws from names the same layer of the state's model in about 74% of them, and that layer or the one next to it in at least 95%; among the 3,130 of those wells that the state places in a Trinity layer (Paluxy to Hosston) it is about 56%.

  • The layers come from the Texas Water Development Board's Northern Trinity and Woodbine model, with quarter mile cells, summarized here to about 1.3 miles. It is a regional model, not a survey of any lot: between one model point and the next, the real depth of each layer can differ.
  • In this model every layer is at least 30 feet thick, even where the real rock is thinner or missing. Thin layers and the edges of the model are approximate.
  • Inside the Trinity this atlas does not name single model layers: it groups the Paluxy and Glen Rose (upper Trinity) and groups the Hensell, Pearsall and Hosston (lower Trinity, Twin Mountains and Travis Peak), because the check against the state's codes shows the method cannot separate them reliably.
  • "Near or below the base of the Trinity" means the well reaches the bottom of the model or passes it, often by tens of feet. Older rock that the model does not include may lie there.
  • We never use the model's water levels. The water level on this page is the one each driller measured when the well was finished.

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/places/quinlan-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources