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

> 1,108 well reports filed in Clay County since 2001. Median depth 140 ft, water struck at 50 ft, median yield 8 gpm.

## Water wells in Clay County, Texas

**1,108** well reports on file. The median well here was taken to **140 ft** and struck water at **50 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Clay County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Red Clay** 281 , **Sand Rock** 191 , **Topsoil** 168 , **Yellow Clay** 110 , **Sand** 102 , **Clay** 72 |
| 25–50 ft | **Red Clay** 137 , **Sand** 113 , **Red Shale** 85 , **Gray Clay** 58 , **Gray Shale** 54 , **Sand Rock** 39 |
| 50–100 ft | **Sand** 228 , **Red Clay** 173 , **Gray Shale** 94 , **Red Shale** 79 , **Gray Clay** 51 , **Blue Shale** 36 |
| 100–200 ft | **Sand** 295 , **Red Clay** 161 , **Gray Shale** 137 , **Red Shale** 93 , **Blue Shale** 42 , **Gray Clay** 33 |
| 200–300 ft | **Sand** 120 , **Gray Shale** 66 , **Red Clay** 44 , **Red Shale** 43 , **Blue Shale** 19 , **Sandy Gray Shale** 6 |
| 300–500 ft | **Sand** 47 , **Gray Shale** 27 , **Red Shale** 14 , **Gray Clay** 5 , **Red Clay** 7 , **Sand And Conglomerate** 4 |
| 500–1000 ft | **Red Shale** 3 , **Broken Sand** 2 , **Limestone** 2 , **Red Blue Shale** 1 , **Red/Brown Shale** 1 , **Sand** 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 Clay County

*Licensed firms in Clay County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Erwin Water Well Drilling](/driller/erwin-water-well-drilling.md) | 235 | 200 | 7 | 2001–2026 |
| [Prater Water Well](/driller/prater-water-well.md) | 235 | 160 | 10 | 2003–2024 |
| [LEONARD WATER SERVICES](/driller/leonard-water-services.md) | 66 | 40 | 40 | 2016–2026 |
| [Talon Drilling, LP](/driller/talon-drilling-lp.md) | 56 | 25 | — | 2002–2008 |
| [Erwin Drilling](/driller/erwin-drilling.md) | 48 | 200 | 5 | 2018–2026 |
| [AOC Environmental, Inc.](/driller/aoc-environmental-inc.md) | 39 | 77 | 2 | 2012–2016 |
| [Jones Water Well Drilling](/driller/jones-water-well-drilling.md) | 27 | 165 | 8 | 2004–2011 |
| [White Water Well](/driller/white-water-well.md) | 25 | 150 | 8 | 2012–2026 |
| [THI WATER WELL](/driller/thi-water-well.md) | 24 | 50 | 14 | 2009–2022 |
| [Talon/LPE](/driller/talon-lpe.md) | 23 | 20 | — | 2012–2024 |
| [M5 Drilling](/driller/m5-drilling.md) | 17 | 195 | 10 | 2020–2026 |
| [JB Water Well Drlg](/driller/jb-water-well-drlg.md) | 17 | 100 | 8 | 2016–2019 |
| [Sunbelt Industrial Services](/driller/sunbelt-industrial-services.md) | 16 | 17 | — | 2010–2012 |
| [Fuel Tech](/driller/fuel-tech.md) | 16 | 25 | — | 2001–2006 |
| [Alpha Omega Water Well](/driller/alpha-omega-water-well.md) | 15 | 215 | 8 | 2008–2026 |
| [HARRISON DRILLING](/driller/harrison-drilling.md) | 14 | 45 | 50 | 2011–2017 |
| Steve Harrison Drilling | 14 | 45 | 35 | 2012–2013 |
| [CM2, Inc.](/driller/cm2-inc.md) | 14 | 15 | — | 2001–2004 |
| [CHESHIER WATER WELLS](/driller/cheshier-water-wells.md) | 12 | 98 | 3 | 2004–2026 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 12 | 28 | — | 2012 |
| [White Drilling Company, Inc.](/driller/white-drilling-company-inc.md) | 12 | 75 | — | 2003 |
| [Water Well Drilling and Service](/driller/water-well-drilling-and-service.md) | 10 | 100 | 5 | 2013–2014 |
| [A-5 Services LLC](/driller/a-5-services-llc.md) | 8 | 340 | 15 | 2022–2025 |
| [Gillispie Drilling](/driller/gillispie-drilling.md) | 8 | 62 | 6 | 2019–2025 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 8 | 20 | — | 2005–2007 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 617 | 55.7% | 190 |
| Stock | 175 | 15.8% | 140 |
| Monitor | 142 | 12.8% | 25 |
| Irrigation | 105 | 9.5% | 42 |
| Environmental Soil Boring | 37 | 3.3% | 20 |
| Injection | 12 | 1.1% | 20 |
| Public Supply | 10 | 0.9% | 50 |
| Test Well | 4 | 0.4% | 370 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1990s | 1 | 325 | — |
| 2000s | 295 | 120 | 40 |
| 2010s | 513 | 140 | 50 |
| 2020s | 299 | 150 | 70 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 275024 | 2011 | 620 | 300 | 16 | Domestic |
| 259569 | 2011 | 620 | 382 | 45 | Fracking Supply |
| 275032 | 2011 | 600 | 300 | 2 | Domestic |
| 259568 | 2011 | 600 | 382 | 50 | Fracking Supply |
| 78828 | 2006 | 600 | 68 | 30 | Stock |
| 629062 | 2022 | 580 | 320 | 10 | Domestic |
| 546978 | 2020 | 540 | — | — | Domestic |
| 381084 | 2014 | 535 | — | 15 | Industrial |
| 459374 | 2017 | 520 | — | — | Domestic |
| 78820 | 2006 | 515 | 120 | 10 | Stock |

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 Clay 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

- [Jones](/county/jones.md)
- [Brown](/county/brown.md)
- [Runnels](/county/runnels.md)
- [Bosque](/county/bosque.md)
- [Dimmit](/county/dimmit.md)
- [Newton](/county/newton.md)
- [Coke](/county/coke.md)
- [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)

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

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