# Water wells in Callahan County, Texas — how deep, and through what

> 989 well reports filed in Callahan County since 2001. Median depth 58 ft, water struck at 26 ft, median yield 10 gpm.

## Water wells in Callahan County, Texas

**989** well reports on file. The median well here was taken to **58 ft** and struck water at **26 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Callahan County

*Logged in Callahan County, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Sand** 236 , **Top Soil** 265 , **Sandy Clay** 184 , **Clay** 113 , **Red Clay** 123 , **Brown Clay** 133 |
| 25–50 ft | **Red Clay** 79 , **Sand** 66 , **Sand & Gravel** 71 , **Yellow Shale** 71 , **Yellow Clay** 57 , **Blue Shale** 41 |
| 50–100 ft | **Red Clay** 47 , **Yellow Clay** 40 , **Sand** 36 , **Shale** 28 , **Sand And Gravel** 22 , **Clay** 23 |
| 100–200 ft | **Shale** 27 , **Red Clay** 20 , **Brown Clay** 16 , **Sand** 19 , **Sand And Gravel** 15 , **Clay** 13 |
| 200–300 ft | **Red Clay** 4 , **Brown Clay** 4 , **Sand And Gravel** 3 , **Gyp Rock** 2 , **Yellow Clay** 3 , **Gray Shale** 3 |
| 300–500 ft | **Grey Shale** 1 , **Gyp Rock** 1 , **Reddish Shale** 1 , **Gray Limestone** 1 , **Gray Shale** 1 , **Black Shale & Coal** 1 |

The rock column here is what drillers wrote down, layer by layer, in their own words — 5,345,462 layers across 707,856 wells. It is not a geological survey: two drillers may call the same clay by two names, and this site does not correct them.

### Who drills in Callahan County

*Licensed firms in Callahan County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Diversified Water Well Drilling](/driller/diversified-water-well-drilling.md) | 168 | 50 | 10 | 2003–2017 |
| [Michael Gilliam Consultant Services](/driller/michael-gilliam-consultant-services.md) | 147 | 104 | 7 | 2004–2024 |
| [F&F Drilling](/driller/f-f-drilling.md) | 84 | 100 | 15 | 2003–2022 |
| [AUTHENTIC DRILLING](/driller/authentic-drilling.md) | 80 | 14 | — | 2020–2021 |
| [White Drilling Company, Inc.](/driller/white-drilling-company-inc.md) | 74 | 52 | 30 | 2002–2025 |
| [LEONARD WATER SERVICES](/driller/leonard-water-services.md) | 47 | 54 | 15 | 2002–2025 |
| [Moore's Pump & Supply](/driller/moore-s-pump-supply.md) | 37 | 55 | 12 | 2003–2016 |
| [Jimmy D. Wilson Drilling](/driller/jimmy-d-wilson-drilling.md) | 34 | 85 | 15 | 2001–2012 |
| [Zavala Drilling, CO](/driller/zavala-drilling-co.md) | 32 | 47 | 10 | 2007–2013 |
| [SIMMONS WATER WELL SERVICE](/driller/simmons-water-well-service.md) | 23 | 140 | — | 2019–2026 |
| DIVERSIFIED WATER WELLS | 17 | 50 | 15 | 2009–2012 |
| [T & T Drilling, LTD](/driller/t-t-drilling-ltd.md) | 17 | 20 | — | 2006–2007 |
| [Leonard Water Service](/driller/leonard-water-service.md) | 14 | 50 | — | 2002–2008 |
| [A&W Drilling Services, Ltd.](/driller/a-w-drilling-services-ltd.md) | 13 | 55 | — | 2011 |
| [Peterson Drilling & Testing, Inc.](/driller/peterson-drilling-testing-inc.md) | 13 | — | — | 2005–2006 |
| [DAVIS ENVIRONMENTAL DRILLING](/driller/davis-environmental-drilling.md) | 13 | 40 | — | 2002–2003 |
| [Robert Caraway Water Well Drlg.](/driller/robert-caraway-water-well-drlg.md) | 9 | 130 | 15 | 2018–2026 |
| [Lange Drilling Co](/driller/lange-drilling-co.md) | 9 | 60 | 8 | 2005–2017 |
| [Simmons Drilling Co.](/driller/simmons-drilling-co.md) | 9 | 60 | 12 | 2008–2012 |
| Moore's Pump & Supplies | 8 | 55 | 7 | 2013–2015 |
| Jimmy D. Wilson | 7 | 80 | 25 | 2001–2012 |
| [T&T Drilling](/driller/t-t-drilling.md) | 7 | 20 | — | 2003 |
| Foster Water Well Service | 6 | 115 | 15 | 2023–2025 |
| [R&R DRILLING LLC](/driller/r-r-drilling-llc.md) | 6 | 234 | — | 2023–2024 |
| [MUNDEN WATER WELL SERVICE](/driller/munden-water-well-service.md) | 6 | 52 | 6 | 2017–2019 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 311 | 31.4% | 60 |
| Irrigation | 284 | 28.7% | 57 |
| Monitor | 164 | 16.6% | 14 |
| Stock | 131 | 13.2% | 95 |
| Test Well | 43 | 4.3% | 102 |
| Other | 27 | 2.7% | 108 |
| Environmental Soil Boring | 26 | 2.6% | 15 |
| Closed-Loop Geothermal | 2 | 0.2% | 300 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 296 | 50 | 25 |
| 2010s | 422 | 60 | 28 |
| 2020s | 271 | 50 | 26 |

### The deepest reports on file

*Deepest reports in Callahan County. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 42179 | 2004 | 400 | — | — | Test Well |
| 666113 | 2024 | 380 | — | — | Stock |
| 605565 | 2022 | 348 | — | — | Test Well |
| 105579 | 2007 | 310 | 75 | 2 | Test Well |
| 639252 | 2023 | 300 | — | — | Closed-Loop Geothermal |
| 666875 | 2024 | 288 | 216 | — | Stock |
| 635480 | 2023 | 286 | 82 | — | Other |
| 729098 | 2026 | 280 | — | — | Stock |
| 616250 | 2022 | 280 | 190 | 40 | Domestic |
| 114740 | 2007 | 280 | — | — | Domestic |

Every figure on this site is a **median**, never an average. On reported yield the average is twice the median, because a handful of entries are typing errors — the largest reads 2,200,100 gallons per minute against 30,078 for the next one. Yields above 3,000 gpm (136 wells, 0.045%) and depths beyond 5,000 ft (103 wells, 0.016%) are kept in the file, marked, and left out of the medians.

### Drilling a well in Callahan County?

Depth is only half the quote. What it costs depends on the rock, the casing and the pump. Tell us where and we pass the request to licensed Texas drillers.

We are nobody's agent and have no arrangement with any firm today. [What we do with this](/privacy.md).

### Counties with a comparable number of reports

- [Winkler](/county/winkler.md)
- [Crockett](/county/crockett.md)
- [Houston](/county/houston.md)
- [Mills](/county/mills.md)
- [Floyd](/county/floyd.md)
- [La Salle](/county/la-salle.md)
- [Hemphill](/county/hemphill.md)
- [Pecos](/county/pecos.md)
- [San Augustine](/county/san-augustine.md)
- [Lampasas](/county/lampasas.md)
- [McCulloch](/county/mcculloch.md)
- [Brooks](/county/brooks.md)
- [San Saba](/county/san-saba.md)

A sliding window, not a ranking. [Every county](/county.md).

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Página: https://texas-water-wells.pages.dev/county/callahan/
Fonte: Texas Submitted Driller's Report Database — Texas Water Development Board, from reports filed with the Texas Department of Licensing and Regulation
Recolha: 2026-08-23