Skip to content
ENES
Marketplace

How deep are water wells in Sadler, Texas?

Only 17 home water wells in and around Sadler, Texas have been reported since 2001, so treat this as a rough guide: the middle half are 300 to 360 feet deep (median 335 ft). Most draw from the Woodbine Aquifer (71%), and 29% end at or just below the base of the Woodbine (Washita and Fredericksburg groups), according to the state's Northern Trinity and Woodbine model (TWDB). Estimated cost of a complete well at the median depth: $11,000 to $26,500.

This page is based on fewer than 30 wells, so it is kept out of search engines until more reports come in. Treat every figure as a rough guide.

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 pointGrayson County
What is under Sadler, TexasUnderground column at the center of Sadler: median well 335 ft, middle half 300 to 360 ft, water at 140 ft, and the layers of the state's model with their thickness.Woodbine: 0 to 360 ftWoodbineWashita and Fredericksburg: 360 to 839 ftWashita and Frederick…continues to 1,669 ft0100200300400500ftGround level · 720 ft above sea levelMedian well: 335 ftWater standing in the well from 140 ftWater level140 ftMiddle half300–360 ftMedian well335 ft

Under Sadler, Grayson County

Layers at the center of Sadler 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 17 real wells.

Home wells in and around Sadler

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: Sadler and about 2 miles around it

Key figures

Typical depth (middle half)
300 to 360 feet
Median depth
335 feet
Deepest 10% are past
402 feet
Water level (median)
140 feet
12 wells
Yield (median)
20 gpm
11 wells, gallons per minute
Wells used
17
Since 2001
Inside the city limits
1
the rest within 2 miles
All years on file
17
median 335 ft, since 2005
Confidence
Few wells (10 to 29)

When the wells were finished, the water stood a median 140 feet below the surface (12 wells), well above the bottom: the typical well holds about 195 feet of water.

What is under Sadler, TexasUnderground column at the center of Sadler: median well 335 ft, middle half 300 to 360 ft, water at 140 ft, and the layers of the state's model with their thickness.Woodbine: 0 to 360 ftWoodbineWashita and Fredericksburg: 360 to 839 ftWashita and Frederick…continues to 1,669 ft0100200300400500ftGround level · 720 ft above sea levelMedian well: 335 ftWater standing in the well from 140 ftWater level140 ftMiddle half300–360 ftMedian well335 ft
Layers at the center of Sadler 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 17 real wells.

Which formation do wells in Sadler draw from?

Most draw from the Woodbine Aquifer (71%), and 29% end at or just below the base of the Woodbine (Washita and Fredericksburg groups), according to the state's Northern Trinity and Woodbine model (TWDB). Here the state maps the Trinity as one undivided unit, the Antlers Formation, so that split between layers is approximate.

The bottom of the hole tells a different story: 53% end at or just below the base of the Woodbine (Washita and Fredericksburg groups), although only 29% take their water from there. Many drillers go past the producing layer to leave a reserve.

Layer (state's model)ShareWellsTypical depth (ft)
Woodbine71%12295–352
At or just below the base of the WoodbineWashita and Fredericksburg29%5350–385

For 77% of these wells the report says where the water enters and we use the middle of that interval; for the rest we use the bottom of the hole, which tends to read one layer too deep.

The layers under the center of Sadler

From the state's model, at 720 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)
Woodbinesandstone with shale0360360
Washita and Fredericksburglimestone, marl and clay360839479
Upper Trinitysandstone, limestone and marl8391,315476
Lower Trinitysandstone with shale and limestone1,3151,669354

Depth over time

Too few wells per period in and around Sadler to compare depth over time. Since 2005, 17 home wells have been reported, with a median of 335 feet.

PeriodMedian depth (ft)Wells
2001–2005under 10 wells1
2006–2010under 10 wells2
2011–2015under 10 wells1
2016–2020under 10 wells5
2021–2025under 10 wells8

What a well costs in Sadler

At the median depth for Sadler (335 feet), a complete home well would cost roughly $11,000 to $26,500: $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 (300 to 360 feet) the range runs from $10,000 to $28,000. 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 Sadler, Texas?

Only 17 home water wells in and around Sadler, Texas have been reported since 2001, so treat this as a rough guide: the middle half are 300 to 360 feet deep (median 335 ft). One in ten goes past 402 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 Sadler draw from?

Most draw from the Woodbine Aquifer (71%), and 29% end at or just below the base of the Woodbine (Washita and Fredericksburg groups), according to the state's Northern Trinity and Woodbine model (TWDB). Here the state maps the Trinity as one undivided unit, the Antlers Formation, so that split between layers is approximate. This is an estimate from the state's regional model, not a survey of the lot.

How much does a water well cost in Sadler?

At the median depth (335 feet), a complete well would cost roughly $11,000 to $26,500, 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 Sadler?

When the wells were finished, the water stood a median 140 feet below the surface (12 wells), well above the bottom: the typical well holds about 195 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 Sadler?

Sadler is inside the Red River 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 77% of these wells the report says where the water enters and we use the middle of that interval; for the rest we use the bottom of the hole, which tends to read one layer too deep.

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/sadler-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources