# Well grid 66-36, Texas — Colorado, Wharton — how deep, and through what

> 140 well reports in Texas state well grid 66-36, covering Colorado, Wharton, Lavaca. Median depth 165 ft.

## Texas well grid 66-36

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Colorado County](/county/colorado.md) and [Wharton County](/county/wharton.md). **140** reports, median depth **165 ft**.

### What you will drill through in grid 66-36

*Logged in state well grid 66-36, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Sand** 30 , **Clay** 26 , **Surface Soil** 19 , **Topsoil** 17 , **Top Soil** 16 , **Sandy Topsoil** 16 |
| 25–50 ft | **Sand** 26 , **Clay** 22 , **White Clay** 7 , **Gravel** 7 , **Red Clay** 4 , **Sand & Rock** 5 |
| 50–100 ft | **Sand** 31 , **Clay** 20 , **Rock** 18 , **Sand & Rock** 11 , **White Clay** 7 , **Sand & Rock Streaks** 7 |
| 100–200 ft | **Sand** 52 , **Clay** 38 , **Rock** 26 , **White Clay** 13 , **Wh Clay** 7 , **Sand & Rock** 6 |
| 200–300 ft | **Sand** 16 , **Clay** 13 , **Coarse Sand** 10 , **Rock** 3 , **Red Clay** 1 , **Blue Clay** 2 |
| 300–500 ft | **Sand** 9 , **Clay** 6 , **Shale** 4 , **Gravel** 2 , **Clay W/ Sand Streaks** 1 , **Tan & Red Clay** 1 |
| 500–1000 ft | **Clay** 3 , **Sand** 2 , **Hard Shale** 1 , **Sand & Rocks** 1 , **Good Sand** 1 , **Rocks & Sand** 1 |

### Who drills here

*Licensed firms in state well grid 66-36, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Neuendorff's Water Well Svc., Inc.](/driller/neuendorff-s-water-well-svc-inc.md) | 29 | 150 | 60 | 2004–2014 |
| [Neuendorff's Water Well Service, Inc.](/driller/neuendorff-s-water-well-service-inc.md) | 23 | 150 | 47 | 2015–2026 |
| [Joe Ferguson Drilling, Inc.](/driller/joe-ferguson-drilling-inc.md) | 17 | 240 | — | 2004–2006 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 7 | 54 | — | 2013 |
| [CHANDLER DRILLING INC](/driller/chandler-drilling-inc.md) | 5 | 160 | 80 | 2009–2026 |
| [Crowell Drilling Company, Inc.](/driller/crowell-drilling-company-inc.md) | 5 | 510 | 2,500 | 2003–2014 |
| [J&S WATER WELLS](/driller/j-s-water-wells.md) | 5 | 825 | 100 | 2007–2014 |
| [Cobra Water Well Drilling, LLC.](/driller/cobra-water-well-drilling-llc.md) | 4 | 210 | 100 | 2014–2023 |
| [Burleson Services, Inc.](/driller/burleson-services-inc.md) | 4 | 300 | 110 | 2004–2009 |
| [Texas Southern Drilling](/driller/texas-southern-drilling.md) | 3 | 185 | 45 | 2022–2025 |
| [Cady's Water wells](/driller/cady-s-water-wells.md) | 3 | 135 | 150 | 2013–2019 |
| [Skutca Water Well](/driller/skutca-water-well.md) | 3 | 159 | 70 | 2003–2010 |
| Stetson Water Well | 3 | 150 | 35 | 2006 |
| [Everett Carroll Water Well Service](/driller/everett-carroll-water-well-service.md) | 3 | 155 | 30 | 2004–2006 |
| [Chaffin Water Well Service](/driller/chaffin-water-well-service.md) | 2 | 215 | 120 | 2022–2023 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 2 | 55 | — | 2022 |
| [Ballard Water Well Co. LLC](/driller/ballard-water-well-co-llc.md) | 2 | 540 | 100 | 2018–2020 |
| [Chaffin Water Wells](/driller/chaffin-water-wells.md) | 2 | 400 | 42 | 2018 |
| [Maresh Drilling Co., Inc.](/driller/maresh-drilling-co-inc.md) | 2 | 160 | 90 | 2003–2016 |
| [Joe Ferguson Water Well Drilling, Inc.](/driller/joe-ferguson-water-well-drilling-inc.md) | 2 | 230 | — | 2004 |
| [J4 Water Works, LLC](/driller/j4-water-works-llc.md) | 1 | 230 | — | 2026 |
| [Busselman Water Wells, LLC](/driller/busselman-water-wells-llc.md) | 1 | 145 | 40 | 2024 |
| [Bluebonnet Water Wells](/driller/bluebonnet-water-wells.md) | 1 | 185 | 80 | 2024 |
| [INDEPENDENT WATER WELL SERVICE](/driller/independent-water-well-service.md) | 1 | 123 | 60 | 2018 |
| [Geophysical Drilling, Inc.](/driller/geophysical-drilling-inc.md) | 1 | 144 | 100 | 2017 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 62 | 44.3% | 150 |
| Industrial | 24 | 17.1% | 240 |
| Stock | 17 | 12.1% | 154 |
| Irrigation | 17 | 12.1% | 365 |
| Rig Supply | 9 | 6.4% | 225 |
| Monitor | 8 | 5.7% | 55 |
| Other | 1 | 0.7% | 150 |
| Test Well | 1 | 0.7% | 400 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 56 | 200 | 43 |
| 2010s | 57 | 160 | 45 |
| 2020s | 27 | 155 | 40 |

### The deepest reports on file

*Deepest reports in state well grid 66-36. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 358158 | 2014 | 840 | 35 | — | Irrigation |
| 369317 | 2014 | 825 | 72 | 2,300 | Irrigation |
| 207430 | 2010 | 550 | 32 | 2,500 | Irrigation |
| 487362 | 2018 | 540 | — | — | Industrial |
| 351182 | 2014 | 510 | 42 | — | Irrigation |
| 27997 | 2003 | 461 | 25 | — | Irrigation |
| 619411 | 2022 | 400 | 75 | 400 | Irrigation |
| 493335 | 2018 | 400 | 59 | 42 | Test Well |
| 530755 | 2019 | 365 | 45 | 600 | Irrigation |
| 527196 | 2019 | 360 | 55 | — | Irrigation |

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 66-36?

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 [Colorado County](/county/colorado.md), [Wharton County](/county/wharton.md), [Lavaca County](/county/lavaca.md).

### Grids with a comparable number of reports

- [68-31](/area/68-31.md)
- [19-38](/area/19-38.md)
- [30-56](/area/30-56.md)
- [34-40](/area/34-40.md)
- [38-42](/area/38-42.md)
- [46-40](/area/46-40.md)
- [58-40](/area/58-40.md)
- [78-11](/area/78-11.md)
- [80-11](/area/80-11.md)
- [31-45](/area/31-45.md)
- [39-15](/area/39-15.md)
- [39-22](/area/39-22.md)
- [41-10](/area/41-10.md)

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Página: https://texas-water-wells.pages.dev/area/66-36/
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