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How deep are water wells in Road Runner, Texas?

Home water wells in and around Road Runner, Texas are typically 480 to 618 feet deep (median 528 ft, 40 wells reported since 2001). All (100%) are completed in the Trinity, which the state maps here as one undivided unit, the Antlers Formation. Estimated cost of a complete well at the median depth: $15,500 to $38,000.

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 pointCooke County
What is under Road Runner, TexasUnderground column at the center of Road Runner: median well 528 ft, middle half 480 to 618 ft, water at 340 ft, and the layers of the state's model with their thickness.Washita and Fredericksburg: 0 to 393 ftWashita and Frederick…Upper Trinity: 393 to 932 ftUpper Trinitycontinues to 1,269 ft0200400600800ftGround level · 703 ft above sea levelMedian well: 528 ftWater standing in the well from 340 ftWater level340 ftMiddle half480–618 ftMedian well528 ft

Under Road Runner, Cooke County

Layers at the center of Road Runner 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 40 real wells.

Home wells in and around Road Runner

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: Road Runner and about 2 miles around it

Key figures

Typical depth (middle half)
480 to 618 feet
Median depth
528 feet
Deepest 10% are past
704 feet
Water level (median)
340 feet
31 wells
Yield (median)
13 gpm
33 wells, gallons per minute
Wells used
40
Since 2001
Inside the city limits
0
the rest within 2 miles
All years on file
40
median 528 ft, since 2003
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 340 feet below the surface (31 wells).

What is under Road Runner, TexasUnderground column at the center of Road Runner: median well 528 ft, middle half 480 to 618 ft, water at 340 ft, and the layers of the state's model with their thickness.Washita and Fredericksburg: 0 to 393 ftWashita and Frederick…Upper Trinity: 393 to 932 ftUpper Trinitycontinues to 1,269 ft0200400600800ftGround level · 703 ft above sea levelMedian well: 528 ftWater standing in the well from 340 ftWater level340 ftMiddle half480–618 ftMedian well528 ft
Layers at the center of Road Runner 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 40 real wells.

Which formation do wells in Road Runner draw from?

All (100%) are completed in the Trinity, which the state maps here as one undivided unit, the Antlers Formation.

Layer (state's model)ShareWellsTypical depth (ft)
Upper TrinityPaluxy and Glen Rose100%40480–618

Only 58% of these wells have the water-bearing interval on their report (reports before about 2012 rarely do). For the others we use the bottom of the hole, which tends to read one layer deeper than where the water actually comes from.

The layers under the center of Road Runner

From the state's model, at 703 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)
Washita and Fredericksburglimestone, marl and clay0393393
Upper Trinitysandstone, limestone and marl393932539
Lower Trinitysandstone with shale and limestone9321,269337

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 Road Runner are getting deeper. For reference, the median was 572 feet in 2016 to 2020 (10 wells) and 532 feet in 2021 to 2025 (16 wells).

PeriodMedian depth (ft)Wells
2001–2005under 10 wells6
2006–2010under 10 wells4
2011–2015under 10 wells4
2016–202057210
2021–202553216

What a well costs in Road Runner

At the median depth for Road Runner (528 feet), a complete home well would cost roughly $15,500 to $38,000: $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 (480 to 618 feet) the range runs from $14,500 to $43,500. 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 Road Runner, Texas?

Home water wells in and around Road Runner, Texas are typically 480 to 618 feet deep (median 528 ft, 40 wells reported since 2001). One in ten goes past 704 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 Road Runner draw from?

All (100%) are completed in the Trinity, which the state maps here as one undivided unit, the Antlers Formation. This is an estimate from the state's regional model, not a survey of the lot.

How much does a water well cost in Road Runner?

At the median depth (528 feet), a complete well would cost roughly $15,500 to $38,000, 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 Road Runner?

When the wells were finished, the water stood a median 340 feet below the surface (31 wells). The level moves with drought and from one well to the next.

Do I need a permit to drill a well in Road Runner?

Road Runner is inside the North Texas Groundwater Conservation District. Groundwater conservation districts in Texas can require registering or permitting a new well, keeping set distances from property lines and other wells, and paying fees. Rules differ from district to district: ask the district before drilling.

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.

Only 58% of these wells have the water-bearing interval on their report (reports before about 2012 rarely do). For the others we use the bottom of the hole, which tends to read one layer deeper than where the water actually comes from.

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.
  • In this area, north and west of Fort Worth, the state maps the Trinity as one undivided unit, the Antlers Formation. The model cuts it into layers by depth; the split between upper and lower Trinity shown here is approximate, and the depth ranges are the solid part.
  • "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/road-runner-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources