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How deep are water wells in Port Lavaca, Texas?

Home water wells in and around Port Lavaca, Texas are consistently 226 to 250 feet deep (median 238 ft, 42 wells drilled in the last 10 years). Estimated cost of a complete well at the median depth: $8,500 to $21,000.

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 pointCalhoun County
What is under Port Lavaca, TexasUnderground column at the center of Port Lavaca: median well 238 ft, middle half 226 to 250 ft, water at 18 ft.No state layer model here yet0100200300ftGround levelMedian well: 238 ftWater standing in the well from 18 ftWater level18 ftMiddle half226–250 ftMedian well238 ft

Under Port Lavaca, Calhoun County

The well and the water are the median of 42 real wells. This atlas does not have a state layer model for this area yet.

Home wells in and around Port Lavaca

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: Port Lavaca and about 2 miles around it

Key figures

Typical depth (middle half)
226 to 250 feet
Median depth
238 feet
Deepest 10% are past
283 feet
Water level (median)
18 feet
39 wells
Yield (median)
75 gpm
42 wells, gallons per minute
Wells used
42
In the last 10 years
Inside the city limits
3
the rest within 2 miles
All years on file
82
median 239 ft, since 2002
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 18 feet below the surface (39 wells), well above the bottom: the typical well holds about 220 feet of water.

What is under Port Lavaca, TexasUnderground column at the center of Port Lavaca: median well 238 ft, middle half 226 to 250 ft, water at 18 ft.No state layer model here yet0100200300ftGround levelMedian well: 238 ftWater standing in the well from 18 ftWater level18 ftMiddle half226–250 ftMedian well238 ft
The well and the water are the median of 42 real wells. This atlas does not have a state layer model for this area yet.

Which formation do wells in Port Lavaca draw from?

We cannot say yet for Port Lavaca. 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 Calhoun 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 Port Lavaca are getting deeper. For reference, the median was 240 feet in 2001 to 2005 (15 wells) and 235 feet in 2021 to 2025 (20 wells).

PeriodMedian depth (ft)Wells
2001–200524015
2006–201024010
2011–201524012
2016–202023822
2021–202523520
2026under 10 wells3

What a well costs in Port Lavaca

At the median depth for Port Lavaca (238 feet), a complete home well would cost roughly $8,500 to $21,000: $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 (226 to 250 feet) the range runs from $8,000 to $21,500. 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 Port Lavaca, Texas?

Home water wells in and around Port Lavaca, Texas are consistently 226 to 250 feet deep (median 238 ft, 42 wells drilled in the last 10 years). One in ten goes past 283 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 Port Lavaca?

At the median depth (238 feet), a complete well would cost roughly $8,500 to $21,000, 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 Port Lavaca?

When the wells were finished, the water stood a median 18 feet below the surface (39 wells), well above the bottom: the typical well holds about 220 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 Port Lavaca?

Port Lavaca is inside the Calhoun County 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.

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

Sources