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How deep are water wells in Driftwood, Texas?

Home water wells in and around Driftwood, Texas are typically 430 to 510 feet deep (median 470 ft, 55 wells drilled in the last 10 years). Nearly all draw from the Middle Trinity (98%), according to the state's Hill Country Trinity model (TWDB). New wells run about 14% deeper than 20 years ago (median 420 ft in 2003 to 2007, 480 ft in 2021 to 2025). Estimated cost of a complete well at the median depth: $14,500 to $34,500.

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 pointHays County
What is under Driftwood, TexasUnderground column at the center of Driftwood: median well 470 ft, middle half 430 to 510 ft, water at 235 ft, and the layers of the state's model with their thickness.Upper Trinity: 0 to 95 ftUpper TrinityMiddle Trinity: 95 to 543 ftMiddle TrinityLower Trinity: 543 to 903 ftLower Trinitycontinues to 903 ft0200400600800ftGround level · 1,065 ft above sea levelMedian well: 470 ftWater standing in the well from 235 ftWater level235 ftMiddle half430–510 ftMedian well470 ft

Under Driftwood, Hays County

Layers at the center of Driftwood from TWDB's Hill Country Trinity model (1 mile cells), at true depth scale. The well and the water are the median of 55 real wells.

Home wells in and around Driftwood

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: Driftwood and about 2 miles around it

Key figures

Typical depth (middle half)
430 to 510 feet
Median depth
470 feet
Deepest 10% are past
530 feet
Water level (median)
235 feet
41 wells
Yield (median)
50 gpm
54 wells, gallons per minute
Wells used
55
In the last 10 years
Inside the city limits
16
the rest within 2 miles
All years on file
156
median 450 ft, since 2002
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 235 feet below the surface (41 wells).

What is under Driftwood, TexasUnderground column at the center of Driftwood: median well 470 ft, middle half 430 to 510 ft, water at 235 ft, and the layers of the state's model with their thickness.Upper Trinity: 0 to 95 ftUpper TrinityMiddle Trinity: 95 to 543 ftMiddle TrinityLower Trinity: 543 to 903 ftLower Trinitycontinues to 903 ft0200400600800ftGround level · 1,065 ft above sea levelMedian well: 470 ftWater standing in the well from 235 ftWater level235 ftMiddle half430–510 ftMedian well470 ft
Layers at the center of Driftwood from TWDB's Hill Country Trinity model (1 mile cells), at true depth scale. The well and the water are the median of 55 real wells.

Which formation do wells in Driftwood draw from?

Nearly all draw from the Middle Trinity (98%), according to the state's Hill Country Trinity model (TWDB).

Layer (state's model)ShareWellsTypical depth (ft)
Middle Trinity98%54430–510
Lower Trinity2%1—

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 Driftwood

From the state's model, at 1,065 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)
Upper Trinitylimestone and marl09595
Middle Trinitylimestone and sand95543447
Lower Trinitysand and limestone543903361

Depth over time

New home wells in and around Driftwood are deeper than 20 years ago: the median went from 420 feet (2003 to 2007) to 480 feet (2021 to 2025), 14% more. Deeper wells do not always mean the water dropped: a driller may be going for another layer, better water or more reserve.

PeriodMedian depth (ft)Wells
2001–200536024
2006–201043043
2011–201548532
2016–202045023
2021–202548031
2026under 10 wells3

What a well costs in Driftwood

At the median depth for Driftwood (470 feet), a complete home well would cost roughly $14,500 to $34,500: $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 (430 to 510 feet) the range runs from $13,500 to $37,000. 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 Driftwood, Texas?

Home water wells in and around Driftwood, Texas are typically 430 to 510 feet deep (median 470 ft, 55 wells drilled in the last 10 years). One in ten goes past 530 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 Driftwood draw from?

Nearly all draw from the Middle Trinity (98%), according to the state's Hill Country Trinity 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 Driftwood?

At the median depth (470 feet), a complete well would cost roughly $14,500 to $34,500, 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 Driftwood?

When the wells were finished, the water stood a median 235 feet below the surface (41 wells). The level moves with drought and from one well to the next.

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

Driftwood is inside the Hays Trinity 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.

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 2,665 wells in the Texas Hill Country 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 76% of them, and that layer or the one next to it in at least 98%.

  • The layers come from the Texas Water Development Board's Hill Country Trinity model, with 1 mile cells. 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.
  • "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/driftwood-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources