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How deep are water wells in Florence, Texas?

Home water wells in and around Florence, Texas are consistently 710 to 802 feet deep (median 750 ft, 40 wells drilled in the last 10 years). Nearly all draw from the lower Trinity (Twin Mountains and Travis Peak, 88%), according to the state's Northern Trinity and Woodbine model (TWDB). Estimated cost of a complete well at the median depth: $21,500 to $51,500.

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 pointWilliamson County
What is under Florence, TexasUnderground column at the center of Florence: median well 750 ft, middle half 710 to 802 ft, water at 560 ft, and the layers of the state's model with their thickness.Upper Trinity: 0 to 646 ftUpper TrinityLower Trinity: 646 to 1,073 ftLower Trinitycontinues to 1,073 ft02004006008001,000ftGround level · 1,010 ft above sea levelMedian well: 750 ftWater standing in the well from 560 ftWater level560 ftMiddle half710–802 ftMedian well750 ft

Under Florence, Williamson County

Layers at the center of Florence 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 40 real wells.

Home wells in and around Florence

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: Florence and about 2 miles around it

Key figures

Typical depth (middle half)
710 to 802 feet
Median depth
750 feet
Deepest 10% are past
850 feet
Water level (median)
560 feet
32 wells
Yield (median)
20 gpm
31 wells, gallons per minute
Wells used
40
In the last 10 years
Inside the city limits
1
the rest within 2 miles
All years on file
70
median 748 ft, since 2003
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 560 feet below the surface (32 wells).

What is under Florence, TexasUnderground column at the center of Florence: median well 750 ft, middle half 710 to 802 ft, water at 560 ft, and the layers of the state's model with their thickness.Upper Trinity: 0 to 646 ftUpper TrinityLower Trinity: 646 to 1,073 ftLower Trinitycontinues to 1,073 ft02004006008001,000ftGround level · 1,010 ft above sea levelMedian well: 750 ftWater standing in the well from 560 ftWater level560 ftMiddle half710–802 ftMedian well750 ft
Layers at the center of Florence 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 40 real wells.

Which formation do wells in Florence draw from?

Nearly all draw from the lower Trinity (Twin Mountains and Travis Peak, 88%), according to the state's Northern Trinity and Woodbine model (TWDB).

Layer (state's model)ShareWellsTypical depth (ft)
Lower TrinityTwin Mountains and Travis Peak88%35730–820
Upper TrinityPaluxy and Glen Rose13%5600–710

For 93% 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 Florence

From the state's model, at 1,010 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)
Upper Trinitysandstone, limestone and marl0646646
Lower Trinitysandstone with shale and limestone6461,073427

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 Florence are getting deeper. For reference, the median was 740 feet in 2006 to 2010 (11 wells) and 800 feet in 2021 to 2025 (19 wells).

PeriodMedian depth (ft)Wells
2001–2005under 10 wells5
2006–201074011
2011–2015under 10 wells8
2016–202073027
2021–202580019

What a well costs in Florence

At the median depth for Florence (750 feet), a complete home well would cost roughly $21,500 to $51,500: $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 (710 to 802 feet) the range runs from $20,500 to $54,500. 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 Florence, Texas?

Home water wells in and around Florence, Texas are consistently 710 to 802 feet deep (median 750 ft, 40 wells drilled in the last 10 years). One in ten goes past 850 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 Florence draw from?

Nearly all draw from the lower Trinity (Twin Mountains and Travis Peak, 88%), according to the state's Northern Trinity and Woodbine model (TWDB). This is an estimate from the state's regional model, not a survey of the lot.

How much does a water well cost in Florence?

At the median depth (750 feet), a complete well would cost roughly $21,500 to $51,500, 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 Florence?

When the wells were finished, the water stood a median 560 feet below the surface (32 wells). The level moves with drought and from one well to the next.

Do I need a permit to drill a well in Florence?

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

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 93% 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.
  • "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/florence-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources