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

> 2,174 well reports filed in Brazos County since 2001. Median depth 228 ft, water struck at 70 ft, median yield 50 gpm.

## Water wells in Brazos County, Texas

**2,174** well reports on file. The median well here was taken to **228 ft** and struck water at **70 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Brazos County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 535 , **Sand** 206 , **Topsoil** 176 , **Shale** 169 , **Sandy Clay** 126 , **Top Soil** 111 |
| 25–50 ft | **Shale** 133 , **Sand** 92 , **Clay** 69 , **Gravel** 48 , **Sandy Shale** 47 , **Sandy Clay** 25 |
| 50–100 ft | **Shale** 228 , **Sand** 147 , **Clay** 117 , **Sandy Shale** 96 , **Rock** 32 , **Gravel** 30 |
| 100–200 ft | **Shale** 278 , **Sand** 265 , **Clay** 157 , **Sandy Shale** 165 , **Rock** 44 , **Streaky Sand** 48 |
| 200–300 ft | **Sand** 288 , **Shale** 272 , **Sandy Shale** 159 , **Clay** 143 , **Streaky Sand** 58 , **Rock** 45 |
| 300–500 ft | **Shale** 289 , **Sand** 334 , **Sandy Shale** 136 , **Clay** 110 , **Streaky Sand** 54 , **Rock** 45 |
| 500–1000 ft | **Shale** 110 , **Sand** 110 , **Clay** 52 , **Sandy Shale** 40 , **Streaky Sand** 26 , **Rock** 7 |
| 1000–5000 ft | **Sand** 10 , **Clay** 7 , **Shale** 6 , **Sand/Lignite** 1 , **Clay,Sand** 1 , **Clay/Lignite** 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 Brazos County

*Licensed firms in Brazos County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Siegert Water Wells, Inc](/driller/siegert-water-wells-inc.md) | 208 | 350 | 35 | 2003–2026 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 184 | 30 | — | 2006–2023 |
| [Brien Water Wells](/driller/brien-water-wells.md) | 175 | 350 | 40 | 2004–2026 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 151 | 30 | — | 2004–2026 |
| [J&S WATER WELLS](/driller/j-s-water-wells.md) | 146 | 490 | 130 | 2003–2025 |
| [S & K Drilling Co](/driller/s-k-drilling-co.md) | 143 | 340 | 24 | 2002–2017 |
| [Batten Well Service](/driller/batten-well-service.md) | 129 | 371 | 25 | 2003–2020 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 123 | 20 | — | 2015–2026 |
| [Pinnergy, LTD](/driller/pinnergy-ltd.md) | 80 | 500 | 125 | 2009–2017 |
| [LTW Services, LP](/driller/ltw-services-lp.md) | 73 | 400 | 90 | 2010–2019 |
| [Mathers Environmental Drilling Inc.](/driller/mathers-environmental-drilling-inc.md) | 43 | 30 | — | 2002–2025 |
| [Advanced Drilling Systems, Inc.](/driller/advanced-drilling-systems-inc.md) | 37 | 30 | — | 2005–2024 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 33 | 21 | — | 2008–2013 |
| [J&S Drilling, LLC](/driller/j-s-drilling-llc.md) | 27 | 360 | 25 | 2018–2026 |
| Chris Siegert | 26 | 372 | 20 | 2014–2023 |
| [Fas-Line Services Inc.](/driller/fas-line-services-inc.md) | 26 | 340 | 75 | 2011–2014 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 23 | 30 | — | 2019–2021 |
| [Geoprojects International, Inc.](/driller/geoprojects-international-inc.md) | 21 | 26 | — | 2005–2010 |
| [M&M Water Well, LLC](/driller/m-m-water-well-llc.md) | 20 | 385 | 30 | 2013–2025 |
| [ECI](/driller/eci.md) | 17 | 35 | — | 2008 |
| [M/W DRILLING COMPANY LLC](/driller/m-w-drilling-company-llc.md) | 16 | 420 | 20 | 2008–2024 |
| [Main Stream Environmental](/driller/main-stream-environmental.md) | 15 | 265 | 50 | 2017–2024 |
| [Gainco, Inc.](/driller/gainco-inc.md) | 15 | 15 | — | 2021 |
| [Alpine Field Services](/driller/alpine-field-services.md) | 15 | 29 | — | 2006–2015 |
| [RIOMAR DRILLING INC](/driller/riomar-drilling-inc.md) | 15 | 5 | — | 2012 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 700 | 32.2% | 360 |
| Monitor | 510 | 23.5% | 30 |
| Environmental Soil Boring | 301 | 13.8% | 15 |
| Rig Supply | 192 | 8.8% | 440 |
| Irrigation | 129 | 5.9% | 74 |
| Industrial | 125 | 5.7% | 410 |
| Stock | 71 | 3.3% | 380 |
| Fracking Supply | 56 | 2.6% | 480 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 559 | 308 | 60 |
| 2010s | 1,040 | 260 | 75 |
| 2020s | 575 | 35 | 72 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 716428 | 2025 | 3,100 | 280 | 127 | Monitor |
| 573014 | 2021 | 3,057 | 249 | 2,000 | Public Supply |
| 172420 | 2009 | 3,000 | 199 | — | Public Supply |
| 71146 | 2005 | 2,900 | 221 | — | Public Supply |
| 342901 | 2013 | 2,609 | 78 | 65 | Rig Supply |
| 175925 | 2004 | 1,736 | 121 | 900 | Irrigation |
| 400455 | 2015 | 1,574 | 82 | 230 | Test Well |
| 66845 | 2003 | 1,546 | 207 | 934 | Irrigation |
| 332699 | 2013 | 1,500 | — | — | Monitor |
| 148724 | 2008 | 1,480 | — | — | Test Well |

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 Brazos 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

- [Cochran](/county/cochran.md)
- [El Paso](/county/el-paso.md)
- [Robertson](/county/robertson.md)
- [Deaf Smith](/county/deaf-smith.md)
- [Upton](/county/upton.md)
- [Polk](/county/polk.md)
- [Grayson](/county/grayson.md)
- [Burleson](/county/burleson.md)
- [Goliad](/county/goliad.md)
- [Uvalde](/county/uvalde.md)
- [Wichita](/county/wichita.md)
- [Reeves](/county/reeves.md)
- [Angelina](/county/angelina.md)

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

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Página: https://texas-water-wells.pages.dev/county/brazos/
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