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How deep are water wells in Combine, Texas?

Home water wells in and around Combine, Texas are typically 34 to 57 feet deep (median 43 ft, 35 wells reported since 2001). All the wells the model covers are completed in 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: $3,500 to $9,000.

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 pointKaufman County
What is under Combine, TexasUnderground column at the center of Combine: median well 43 ft, middle half 34 to 57 ft, water at 15 ft, and the layers of the state's model with their thickness.Above the Woodbine: 0 to 1,735 ftAbove the Woodbinecontinues to 4,775 ft020406080ftGround level · 407 ft above sea levelMedian well: 43 ftWater standing in the well from 15 ftWater level15 ftMiddle half34–57 ftMedian well43 ft

Under Combine, Kaufman County

Layers at the center of Combine 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 35 real wells.

Home wells in and around Combine

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: Combine and about 2 miles around it

Key figures

Typical depth (middle half)
34 to 57 feet
Median depth
43 feet
Deepest 10% are past
60 feet
Water level (median)
15 feet
24 wells
Yield (median)
12 gpm
27 wells, gallons per minute
Wells used
35
Since 2001
Inside the city limits
10
the rest within 2 miles
All years on file
35
median 43 ft, since 2001
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 15 feet below the surface (24 wells), well above the bottom: the typical well holds about 28 feet of water.

What is under Combine, TexasUnderground column at the center of Combine: median well 43 ft, middle half 34 to 57 ft, water at 15 ft, and the layers of the state's model with their thickness.Above the Woodbine: 0 to 1,735 ftAbove the Woodbinecontinues to 4,775 ft020406080ftGround level · 407 ft above sea levelMedian well: 43 ftWater standing in the well from 15 ftWater level15 ftMiddle half34–57 ftMedian well43 ft
Layers at the center of Combine 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 35 real wells.

Which formation do wells in Combine draw from?

All the wells the model covers are completed in 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%3534–57

Only 29% 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 Combine

From the state's model, at 407 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 marl01,7351,735
Woodbinesandstone with shale1,7352,185450
Washita and Fredericksburglimestone, marl and clay2,1852,868684
Upper Trinitysandstone, limestone and marl2,8683,815947
Lower Trinitysandstone with shale and limestone3,8154,775959

Depth over time

Too few wells per period in and around Combine to compare depth over time. Since 2001, 35 home wells have been reported, with a median of 43 feet.

PeriodMedian depth (ft)Wells
2001–2005under 10 wells9
2006–2010under 10 wells5
2011–20155011
2016–2020under 10 wells2
2021–2025under 10 wells8

What a well costs in Combine

At the median depth for Combine (43 feet), a complete home well would cost roughly $3,500 to $9,000: $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 (34 to 57 feet) the range runs from $3,500 to $10,000. 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 Combine, Texas?

Home water wells in and around Combine, Texas are typically 34 to 57 feet deep (median 43 ft, 35 wells reported since 2001). One in ten goes past 60 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 Combine draw from?

All the wells the model covers are completed in 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 Combine?

At the median depth (43 feet), a complete well would cost roughly $3,500 to $9,000, 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 Combine?

When the wells were finished, the water stood a median 15 feet below the surface (24 wells), well above the bottom: the typical well holds about 28 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 Combine?

In the state's boundary file (current as of November 2019) no groundwater conservation district covers Combine. 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.

Only 29% 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.
  • "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/combine-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources