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How deep are water wells in Lamar, Texas?

Home water wells in and around Lamar, Texas are consistently 180 to 200 feet deep (median 190 ft, 105 wells reported since 2001). Estimated cost of a complete well at the median depth: $7,500 to $18,000.

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 pointAransas County
What is under Lamar, TexasUnderground column at the center of Lamar: median well 190 ft, middle half 180 to 200 ft, water at 38 ft.No state layer model here yet050100150200250ftGround levelMedian well: 190 ftWater standing in the well from 38 ftWater level38 ftMiddle half180–200 ftMedian well190 ft

Under Lamar, Aransas County

The well and the water are the median of 105 real wells. This atlas does not have a state layer model for this area yet.

Home wells in and around Lamar

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: Lamar and about 2 miles around it

Key figures

Typical depth (middle half)
180 to 200 feet
Median depth
190 feet
Deepest 10% are past
200 feet
Water level (median)
38 feet
105 wells
Yield (median)
45 gpm
104 wells, gallons per minute
Wells used
105
Since 2001
Inside the city limits
91
the rest within 2 miles
All years on file
105
median 190 ft, since 2003
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 38 feet below the surface (105 wells), well above the bottom: the typical well holds about 152 feet of water.

What is under Lamar, TexasUnderground column at the center of Lamar: median well 190 ft, middle half 180 to 200 ft, water at 38 ft.No state layer model here yet050100150200250ftGround levelMedian well: 190 ftWater standing in the well from 38 ftWater level38 ftMiddle half180–200 ftMedian well190 ft
The well and the water are the median of 105 real wells. This atlas does not have a state layer model for this area yet.

Which formation do wells in Lamar draw from?

We cannot say yet for Lamar. This atlas assigns layers with the TWDB layered models processed so far (the Northern Trinity and Woodbine model, the Hill Country Trinity model, the northern Gulf Coast Aquifer model and the High Plains Aquifer System model), and none covers this area with enough wells. The depth, water level and yield on this page do come from the real wells here.

See the aquifers mapped under Aransas County

Depth over time

There are not enough wells in both 2003 to 2007 and 2021 to 2025 (at least 30 in each) to say with confidence whether wells in and around Lamar are getting deeper. For reference, the median was 198 feet in 2001 to 2005 (28 wells) and 195 feet in 2021 to 2025 (14 wells).

PeriodMedian depth (ft)Wells
2001–200519828
2006–201019031
2011–201518013
2016–202018217
2021–202519514
2026under 10 wells2

What a well costs in Lamar

At the median depth for Lamar (190 feet), a complete home well would cost roughly $7,500 to $18,000: $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 (180 to 200 feet) the range runs from $7,000 to $18,500. 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 Lamar, Texas?

Home water wells in and around Lamar, Texas are consistently 180 to 200 feet deep (median 190 ft, 105 wells reported since 2001). One in ten goes past 200 feet. The depth a given tract needs depends on where it sits and what layers the driller hits.

How much does a water well cost in Lamar?

At the median depth (190 feet), a complete well would cost roughly $7,500 to $18,000, 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 Lamar?

When the wells were finished, the water stood a median 38 feet below the surface (105 wells), well above the bottom: the typical well holds about 152 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 Lamar?

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

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

Sources