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How deep are water wells in Sunset, Texas?

Home water wells in and around Sunset, Texas vary a lot in depth: the middle half are 139 to 380 feet deep (median 175 ft, 128 wells drilled in the last 10 years), so look at the wells closest to the tract. Most (63%) draw from the Trinity, which the state maps here as one undivided unit, the Antlers Formation. Another 37% end near or below the base of the Trinity. Estimated cost of a complete well at the median depth: $7,000 to $17,000.

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 pointMontague County
What is under Sunset, TexasUnderground column at the center of Sunset: median well 175 ft, middle half 139 to 380 ft, water at 54 ft, and the layers of the state's model with their thickness.Lower Trinity: 0 to 155 ftLower TrinityBelow the base of the Trinity0100200300400500ftGround level · 959 ft above sea levelMedian well: 175 ftWater standing in the well from 54 ftWater level54 ftMedian well175 ftMiddle half139–380 ft

Under Sunset, Montague County

Layers at the center of Sunset 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 128 real wells.

Home wells in and around Sunset

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: Sunset and about 2 miles around it

Key figures

Typical depth (middle half)
139 to 380 feet
Median depth
175 feet
Deepest 10% are past
440 feet
Water level (median)
54 feet
74 wells
Yield (median)
15 gpm
92 wells, gallons per minute
Wells used
128
In the last 10 years
Inside the city limits
39
the rest within 2 miles
All years on file
235
median 180 ft, since 2001
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 54 feet below the surface (74 wells), well above the bottom: the typical well holds about 121 feet of water.

What is under Sunset, TexasUnderground column at the center of Sunset: median well 175 ft, middle half 139 to 380 ft, water at 54 ft, and the layers of the state's model with their thickness.Lower Trinity: 0 to 155 ftLower TrinityBelow the base of the Trinity0100200300400500ftGround level · 959 ft above sea levelMedian well: 175 ftWater standing in the well from 54 ftWater level54 ftMedian well175 ftMiddle half139–380 ft
Layers at the center of Sunset 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 128 real wells.

Which formation do wells in Sunset draw from?

Most (63%) draw from the Trinity, which the state maps here as one undivided unit, the Antlers Formation. Another 37% end near or below the base of the Trinity.

42% of the wells bottom out near or below the base of the Trinity in the model, often within tens of feet of it; older rock may lie there.

Layer (state's model)ShareWellsTypical depth (ft)
Lower TrinityTwin Mountains and Travis Peak63%63105–150
Near or below the base of the Trinity37%37280–440

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 Sunset

From the state's model, at 959 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)
Lower Trinitysandstone with shale and limestone0155155

Depth over time

Home well depth in and around Sunset has not changed meaningfully in 20 years: the median was 188 feet in 2003 to 2007 and 160 feet in 2021 to 2025 (a difference under 10% or within the margin of error).

PeriodMedian depth (ft)Wells
2001–200531528
2006–201015840
2011–201526530
2016–202028041
2021–202516087
2026under 10 wells9

What a well costs in Sunset

At the median depth for Sunset (175 feet), a complete home well would cost roughly $7,000 to $17,000: $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 (139 to 380 feet) the range runs from $6,000 to $29,500. 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 Sunset, Texas?

Home water wells in and around Sunset, Texas vary a lot in depth: the middle half are 139 to 380 feet deep (median 175 ft, 128 wells drilled in the last 10 years), so look at the wells closest to the tract. One in ten goes past 440 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 Sunset draw from?

Most (63%) draw from the Trinity, which the state maps here as one undivided unit, the Antlers Formation. Another 37% end near or below the base of the Trinity. This is an estimate from the state's regional model, not a survey of the lot.

How much does a water well cost in Sunset?

At the median depth (175 feet), a complete well would cost roughly $7,000 to $17,000, 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 Sunset?

When the wells were finished, the water stood a median 54 feet below the surface (74 wells), well above the bottom: the typical well holds about 121 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 Sunset?

Sunset is inside the Upper 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 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/sunset-montague-county-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources