How deep are water wells in Canyon Lake, Texas?
Home water wells in and around Canyon Lake, Texas are typically 400 to 610 feet deep (median 480 ft, 576 wells drilled in the last 10 years). Most draw from the Middle Trinity (55%), and 40% draw from the Lower Trinity, according to the state's Hill Country Trinity model (TWDB). Estimated cost of a complete well at the median depth: $14,500 to $35,500.
Updated every day from Texas Water Development Board driller reports. Last update: November 11, 2026, using the state file of November 10, 2026.
Under Canyon Lake, Comal County
Layers at the center of Canyon Lake from TWDB's Hill Country Trinity model (1 mile cells), at true depth scale. The well and the water are the median of 576 real wells.
Digging in…
Home wells in and around Canyon Lake
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.
Well depth (ft)
- <100
- 100
- 200
- 300
- 400
- 600
- 800+
Dashed line: Canyon Lake and about 2 miles around it
Green: aquifer mapped by the state
Key figures
- Typical depth (middle half)
- 400 to 610 feet
- Median depth
- 480 feet
- Deepest 10% are past
- 722 feet
- Water level (median)
- 241 feet
- 350 wells
- Yield (median)
- 15 gpm
- 434 wells, gallons per minute
- Wells used
- 576
- In the last 10 years
- Inside the city limits
- 785
- the rest within 2 miles
- All years on file
- 1,600
- median 480 ft, since 2001
- Confidence
- Standard (30 or more wells)
When the wells were finished, the water stood a median 241 feet below the surface (350 wells).
Which formation do wells in Canyon Lake draw from?
Most draw from the Middle Trinity (55%), and 40% draw from the Lower Trinity, according to the state's Hill Country Trinity model (TWDB).
The bottom of the hole tells a different story: 61% reach the Lower Trinity, although only 40% take their water from it. Many drillers go past the producing layer to leave a reserve.
| Layer (state's model) | Share | Wells | Typical depth (ft) |
|---|---|---|---|
| Middle Trinity | 55% | 263 | 380–584 |
| Lower Trinity | 40% | 190 | 343–504 |
| Upper Trinity | 5% | 24 | 459–589 |
For 97% 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 Canyon Lake
From the state's model, at 967 feet above sea level. These are the model's depths at that one point, not those of any particular lot.
| Layer (state's model) | Top (ft) | Bottom (ft) | Thickness (ft) |
|---|---|---|---|
| Middle Trinitylimestone and sand | 0 | 266 | 266 |
| Lower Trinitysand and limestone | 266 | 777 | 511 |
Depth over time
Home well depth in and around Canyon Lake has not changed meaningfully in 20 years: the median was 500 feet in 2003 to 2007 and 482 feet in 2021 to 2025 (a difference under 10% or within the margin of error).
| Period | Median depth (ft) | Wells |
|---|---|---|
| 2001–2005 | 500 | 343 |
| 2006–2010 | 500 | 333 |
| 2011–2015 | 440 | 304 |
| 2016–2020 | 463 | 316 |
| 2021–2025 | 482 | 276 |
| 2026 | 515 | 28 |
What a well costs in Canyon Lake
At the median depth for Canyon Lake (480 feet), a complete home well would cost roughly $14,500 to $35,500: $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 (400 to 610 feet) the range runs from $12,500 to $43,000. 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
- Wells in Comal County
- Comal Trinity Groundwater Conservation District (groundwater district)
- Unincorporated community (Census-designated place) · 29.8761, -98.2611
Nearby places
Median depth of home wells in each place.
- Spring Branch 464 ft
- Bulverde 504 ft
- Wimberley 710 ft
- Woodcreek 495 ft
- New Braunfels 250 ft
- Garden Ridge 380 ft
Common questions
How deep do you have to drill a well in Canyon Lake, Texas?
Home water wells in and around Canyon Lake, Texas are typically 400 to 610 feet deep (median 480 ft, 576 wells drilled in the last 10 years). One in ten goes past 722 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 Canyon Lake draw from?
Most draw from the Middle Trinity (55%), and 40% draw from the Lower Trinity, according to the state's Hill Country Trinity 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 Canyon Lake?
At the median depth (480 feet), a complete well would cost roughly $14,500 to $35,500, 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 Canyon Lake?
When the wells were finished, the water stood a median 241 feet below the surface (350 wells). The level moves with drought and from one well to the next.
Do I need a permit to drill a well in Canyon Lake?
Canyon Lake is inside the Comal Trinity 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 97% 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 2,665 wells in the Texas Hill Country 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 76% of them, and that layer or the one next to it in at least 98%.
- The layers come from the Texas Water Development Board's Hill Country Trinity model, with 1 mile cells. 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.
- "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/canyon-lake-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.
Sources
- Submitted Driller's Reports database, Texas Water Development Board (TWDB) (file of November 10, 2026)
- Groundwater Availability Model for the Hill Country portion of the Trinity Aquifer System, Texas. Jones, I.C., Anaya, R., and Wade, S.C., Texas Water Development Board, 2009, GAM v2.01 (MODFLOW-96). TWDB groundwater availability model.
- Texas place boundaries, U.S. Census Bureau (2023 cartographic boundary file)
- Ground elevation: Terrain Tiles (Mapzen), Registry of Open Data on AWS
- TWDB well report viewer (each well's official report)