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How deep are water wells in Round Mountain, Texas?

Home water wells in and around Round Mountain, Texas are typically 260 to 500 feet deep (median 372 ft, 128 wells drilled in the last 10 years). Estimated cost of a complete well at the median depth: $12,000 to $29,000.

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 pointBlanco County
What is under Round Mountain, TexasUnderground column at the center of Round Mountain: median well 372 ft, middle half 260 to 500 ft, water at 105 ft.No state layer model here yet0200400600800ftGround levelMedian well: 372 ftWater standing in the well from 105 ftWater level105 ftMiddle half260–500 ftMedian well372 ft

Under Round Mountain, Blanco County

The well and the water are the median of 128 real wells. This atlas does not have a state layer model for this area yet.

Home wells in and around Round Mountain

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: Round Mountain and about 2 miles around it

Key figures

Typical depth (middle half)
260 to 500 feet
Median depth
372 feet
Deepest 10% are past
710 feet
Water level (median)
105 feet
46 wells
Yield (median)
25 gpm
115 wells, gallons per minute
Wells used
128
In the last 10 years
Inside the city limits
13
the rest within 2 miles
All years on file
332
median 340 ft, since 2001
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 105 feet below the surface (46 wells), well above the bottom: the typical well holds about 267 feet of water.

What is under Round Mountain, TexasUnderground column at the center of Round Mountain: median well 372 ft, middle half 260 to 500 ft, water at 105 ft.No state layer model here yet0200400600800ftGround levelMedian well: 372 ftWater standing in the well from 105 ftWater level105 ftMiddle half260–500 ftMedian well372 ft
The well and the water are the median of 128 real wells. This atlas does not have a state layer model for this area yet.

Which formation do wells in Round Mountain draw from?

We cannot say yet for Round Mountain. 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 Blanco County

Depth over time

Home well depth in and around Round Mountain has not changed meaningfully in 20 years: the median was 280 feet in 2003 to 2007 and 330 feet in 2021 to 2025 (a difference under 10% or within the margin of error).

PeriodMedian depth (ft)Wells
2001–200530061
2006–201030056
2011–201539076
2016–202039956
2021–202533081
2026under 10 wells2

What a well costs in Round Mountain

At the median depth for Round Mountain (372 feet), a complete home well would cost roughly $12,000 to $29,000: $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 (260 to 500 feet) the range runs from $9,000 to $36,500. 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 Round Mountain, Texas?

Home water wells in and around Round Mountain, Texas are typically 260 to 500 feet deep (median 372 ft, 128 wells drilled in the last 10 years). One in ten goes past 710 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 Round Mountain?

At the median depth (372 feet), a complete well would cost roughly $12,000 to $29,000, 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 Round Mountain?

When the wells were finished, the water stood a median 105 feet below the surface (46 wells), well above the bottom: the typical well holds about 267 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 Round Mountain?

Round Mountain is inside the Blanco-Pedernales 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/round-mountain-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources