# Well grid 66-03, Texas — Fayette, Colorado — how deep, and through what

> 323 well reports in Texas state well grid 66-03, covering Fayette, Colorado, Austin. Median depth 270 ft.

## Texas well grid 66-03

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Fayette County](/county/fayette.md) and [Colorado County](/county/colorado.md). **323** reports, median depth **270 ft**.

### What you will drill through in grid 66-03

*Logged in state well grid 66-03, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 94 , **Shale** 77 , **Sand** 36 , **Gravel** 28 , **White Clay** 27 , **Top Soil** 26 |
| 25–50 ft | **Sand** 28 , **Tan Clay** 15 , **Clay** 11 , **Shale** 8 , **Rock** 7 , **Tan Sand** 6 |
| 50–100 ft | **Sand** 49 , **Shale** 31 , **Clay** 21 , **Rock** 16 , **Blue Clay** 15 , **White Clay** 13 |
| 100–200 ft | **Sand** 55 , **Shale** 53 , **Rock** 30 , **Clay** 20 , **White Clay** 13 , **Tan Clay** 12 |
| 200–300 ft | **Shale** 29 , **Sand** 28 , **Rock** 26 , **Clay** 12 , **White Clay** 7 , **Hard Rock** 4 |
| 300–500 ft | **Shale** 34 , **Sand** 43 , **Rock** 21 , **Clay** 17 , **Sand & Rock** 10 , **Blue Clay** 6 |
| 500–1000 ft | **Clay** 14 , **Sand** 11 , **Shale** 11 , **Clay & Rock** 3 , **Hard Clay** 4 , **Hard Rock** 2 |

### Who drills here

*Licensed firms in state well grid 66-03, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [WASHINGTON CO WATER WELL DRILLING](/driller/washington-co-water-well-drilling.md) | 29 | 251 | 25 | 2004–2026 |
| [J&S WATER WELLS](/driller/j-s-water-wells.md) | 29 | 560 | 130 | 2003–2024 |
| [Neuendorff's Water Well Svc., Inc.](/driller/neuendorff-s-water-well-svc-inc.md) | 27 | 150 | 30 | 2003–2014 |
| [Washington County Water Well Drilling](/driller/washington-county-water-well-drilling.md) | 27 | 150 | 20 | 2004–2013 |
| [Neuendorff's Water Well Service, Inc.](/driller/neuendorff-s-water-well-service-inc.md) | 19 | 275 | 18 | 2015–2026 |
| [A.W. Flentge Service](/driller/a-w-flentge-service.md) | 18 | 160 | 15 | 2003–2022 |
| [Cobra Water Well Drilling, LLC.](/driller/cobra-water-well-drilling-llc.md) | 17 | 200 | 13 | 2018–2026 |
| [Texas Southern Drilling](/driller/texas-southern-drilling.md) | 15 | 185 | 20 | 2021–2026 |
| [Richter Well Drilling, Inc.](/driller/richter-well-drilling-inc.md) | 13 | 475 | 53 | 2005–2018 |
| [Maresh Drilling Co., Inc.](/driller/maresh-drilling-co-inc.md) | 12 | 320 | 30 | 2001–2025 |
| [Skutca Water Well](/driller/skutca-water-well.md) | 12 | 150 | 20 | 2002–2013 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 11 | 5 | — | 2010–2017 |
| [Washington County Water Well](/driller/washington-county-water-well.md) | 10 | 312 | 40 | 2003–2004 |
| [Jackson Water Well](/driller/jackson-water-well.md) | 6 | 420 | 60 | 2013–2021 |
| [Gearen Drilling](/driller/gearen-drilling.md) | 6 | — | — | 2015 |
| [Harvey's Water Wells](/driller/harvey-s-water-wells.md) | 5 | 436 | 40 | 2013–2023 |
| [Diggs Drilling Co Inc](/driller/diggs-drilling-co-inc.md) | 5 | 170 | 10 | 2009–2016 |
| [Leon Flentge Water Well Drilling and Service](/driller/leon-flentge-water-well-drilling-and-service.md) | 5 | 247 | 25 | 2004–2013 |
| [WB Southern Drilling LLC](/driller/wb-southern-drilling-llc.md) | 4 | 310 | 23 | 2023–2025 |
| [Washington Cnty Water Well Drilling](/driller/washington-cnty-water-well-drilling.md) | 3 | 120 | 3 | 2014 |
| Stetson Water Well Drilling & Service | 3 | 355 | 25 | 2004–2005 |
| [Busselman Water Wells, LLC](/driller/busselman-water-wells-llc.md) | 2 | 180 | 40 | 2025–2026 |
| [Friedel Drilling Company](/driller/friedel-drilling-company.md) | 2 | 503 | 40 | 2021–2023 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 2 | 15 | — | 2022 |
| [Jackson Waterwell](/driller/jackson-waterwell.md) | 2 | 480 | 10 | 2014–2019 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 268 | 83.0% | 250 |
| Rig Supply | 11 | 3.4% | 530 |
| Stock | 8 | 2.5% | 308 |
| Irrigation | 7 | 2.2% | 920 |
| Monitor | 7 | 2.2% | 35 |
| Environmental Soil Boring | 6 | 1.9% | 5 |
| Closed-Loop Geothermal | 6 | 1.9% | — |
| Industrial | 6 | 1.9% | 490 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 105 | 235 | 81 |
| 2010s | 122 | 294 | 101 |
| 2020s | 96 | 275 | 110 |

### The deepest reports on file

*Deepest reports in state well grid 66-03. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 500730 | 2018 | 1,010 | 135 | 250 | Fracking Supply |
| 501175 | 2018 | 1,000 | 135 | 180 | Fracking Supply |
| 474030 | 2018 | 1,000 | 160 | 300 | Fracking Supply |
| 432895 | 2016 | 985 | 165 | 305 | Public Supply |
| 482462 | 2018 | 960 | 200 | 150 | Irrigation |
| 665243 | 2024 | 920 | 200 | 190 | Irrigation |
| 415083 | 2016 | 910 | 130 | 140 | Stock |
| 569537 | 2021 | 860 | 178 | 80 | Domestic |
| 397233 | 2015 | 810 | — | — | Domestic |
| 594211 | 2021 | 790 | 150 | 150 | Rig Supply |

Every figure here comes from a report a licensed driller filed on the day the work ended — sometimes decades ago. It describes what was found then, not what a well yields today, and it is not a statement that any well is sound, potable or still in use.

### Drilling a well near grid 66-03?

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).

This grid falls in [Fayette County](/county/fayette.md), [Colorado County](/county/colorado.md), [Austin County](/county/austin.md), [Washington County](/county/washington.md), [Jackson County](/county/jackson.md).

### Grids with a comparable number of reports

- [11-51](/area/11-51.md)
- [34-35](/area/34-35.md)
- [43-45](/area/43-45.md)
- [07-06](/area/07-06.md)
- [24-59](/area/24-59.md)
- [33-27](/area/33-27.md)
- [57-52](/area/57-52.md)
- [67-53](/area/67-53.md)
- [29-36](/area/29-36.md)
- [34-25](/area/34-25.md)
- [68-01](/area/68-01.md)
- [79-10](/area/79-10.md)
- [24-63](/area/24-63.md)

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Página: https://texas-water-wells.pages.dev/area/66-03/
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