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How deep are water wells in Belterra, Texas?

Home water wells in and around Belterra, Texas are typically 560 to 880 feet deep (median 630 ft, 55 wells drilled in the last 10 years). No single layer dominates: 55% draw from the Middle Trinity and 46% from the Lower Trinity, according to the state's Hill Country Trinity model (TWDB). Estimated cost of a complete well at the median depth: $18,500 to $44,500.

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 Belterra, TexasUnderground column at the center of Belterra: median well 630 ft, middle half 560 to 880 ft, water at 401 ft, and the layers of the state's model with their thickness.Upper Trinity: 0 to 224 ftUpper TrinityMiddle Trinity: 224 to 634 ftMiddle TrinityLower Trinity: 634 to 993 ftLower TrinityBelow the base of the Trinity02505007501,0001,250ftGround level · 1,084 ft above sea levelMedian well: 630 ftWater standing in the well from 401 ftWater level401 ftMiddle half560–880 ftMedian well630 ft

Under Belterra, Hays County

Layers at the center of Belterra 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 Belterra

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: Belterra and about 2 miles around it

Key figures

Typical depth (middle half)
560 to 880 feet
Median depth
630 feet
Deepest 10% are past
922 feet
Water level (median)
401 feet
45 wells
Yield (median)
40 gpm
50 wells, gallons per minute
Wells used
55
In the last 10 years
Inside the city limits
2
the rest within 2 miles
All years on file
181
median 750 ft, since 1994
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 401 feet below the surface (45 wells).

What is under Belterra, TexasUnderground column at the center of Belterra: median well 630 ft, middle half 560 to 880 ft, water at 401 ft, and the layers of the state's model with their thickness.Upper Trinity: 0 to 224 ftUpper TrinityMiddle Trinity: 224 to 634 ftMiddle TrinityLower Trinity: 634 to 993 ftLower TrinityBelow the base of the Trinity02505007501,0001,250ftGround level · 1,084 ft above sea levelMedian well: 630 ftWater standing in the well from 401 ftWater level401 ftMiddle half560–880 ftMedian well630 ft
Layers at the center of Belterra 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 Belterra draw from?

No single layer dominates: 55% draw from the Middle Trinity and 46% from the Lower Trinity, according to the state's Hill Country Trinity model (TWDB).

Layer (state's model)ShareWellsTypical depth (ft)
Middle Trinity55%30525–610
Lower Trinity46%25850–910

For 98% 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 Belterra

From the state's model, at 1,084 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 marl0224224
Middle Trinitylimestone and sand224634410
Lower Trinitysand and limestone634993359

Depth over time

Home well depth in and around Belterra has not changed meaningfully in 20 years: the median was 760 feet in 2003 to 2007 and 820 feet in 2021 to 2025 (a difference under 10% or within the margin of error).

PeriodMedian depth (ft)Wells
2001–200565041
2006–201084040
2011–201571540
2016–202061021
2021–202582035
2026under 10 wells1

What a well costs in Belterra

At the median depth for Belterra (630 feet), a complete home well would cost roughly $18,500 to $44,500: $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 (560 to 880 feet) the range runs from $16,500 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.

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 Belterra, Texas?

Home water wells in and around Belterra, Texas are typically 560 to 880 feet deep (median 630 ft, 55 wells drilled in the last 10 years). One in ten goes past 922 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 Belterra draw from?

No single layer dominates: 55% draw from the Middle Trinity and 46% from the Lower Trinity, 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 Belterra?

At the median depth (630 feet), a complete well would cost roughly $18,500 to $44,500, 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 Belterra?

When the wells were finished, the water stood a median 401 feet below the surface (45 wells). The level moves with drought and from one well to the next.

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

Belterra 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 98% 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/belterra-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources