# Well grid 80-20, Texas — Calhoun, Jackson — how deep, and through what

> 510 well reports in Texas state well grid 80-20, covering Calhoun, Jackson, Bexar. Median depth 24 ft.

## Texas well grid 80-20

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Calhoun County](/county/calhoun.md) and [Jackson County](/county/jackson.md). **510** reports, median depth **24 ft**.

### What you will drill through in grid 80-20

*Logged in state well grid 80-20, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Silty Clay** 18 , **Silty Clay, Reddish Brown** 22 , **Fat Clay** 21 , **No Recovery** 27 , **-Cl- Silty Clay: Reddish Brown, Very Stiff, With Gray Mottli** 16 , **-Concrete- Concrete** 19 |
| 25–50 ft | **Silty Sandy Clay,Reddish Brw.,Moist** 13 , **Silty Clay** 7 , **Grey Clay** 9 , **Fat Clay** 8 , **Sand** 7 , **Sandy Clay** 5 |
| 50–100 ft | **Sand** 11 , **Fat Clay** 5 , **Brown Clay** 5 , **Reddish Brown Clay** 5 , **Grey Sandy Clay** 5 , **Red Clay** 4 |
| 100–200 ft | **Sand** 9 , **Clay** 7 , **Gray Clay** 4 , **Grey Sandy Clay** 3 , **Grey Sand** 2 , **Grey Clay** 3 |
| 200–300 ft | **Sand** 4 , **Clay** 5 , **Coarse Sand** 4 , **Gray Clay** 2 , **Sand And Gravel** 1 , **Clay& Shell** 1 |
| 300–500 ft | **Sand** 4 , **Clay** 2 , **Course Sand** 2 , **Clay Td** 1 , **Blue Clay** 1 , **Coarse Sand** 1 |
| 500–1000 ft | **Clay** 1 , **Sand** 1 , **Sand Fine** 1 |
| 1000–5000 ft | **Sand With Very Little Clay** 1 |

### Who drills here

*Licensed firms in state well grid 80-20, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 177 | 22 | — | 2008–2018 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 106 | 15 | — | 2019–2022 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 77 | 25 | — | 2023–2024 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 64 | 22 | — | 2004–2025 |
| [Cascade Drilling](/driller/cascade-drilling.md) | 24 | 85 | — | 2025 |
| [Lewis Environmental Drilling, Inc.](/driller/lewis-environmental-drilling-inc.md) | 18 | 47 | — | 2013 |
| [Gainco, Inc.](/driller/gainco-inc.md) | 15 | 20 | — | 2014 |
| [WALKER HILL ENVIRONMENTAL INC](/driller/walker-hill-environmental-inc.md) | 13 | — | — | 2012 |
| [Joe Ferguson Water Well Drilling, Inc.](/driller/joe-ferguson-water-well-drilling-inc.md) | 4 | 305 | — | 2012–2016 |
| [Cady's Water wells](/driller/cady-s-water-wells.md) | 3 | 345 | 50 | 2007–2008 |
| Cady Water Wells | 2 | 120 | 30 | 2006 |
| [Finch Water Well](/driller/finch-water-well.md) | 1 | 510 | 60 | 2019 |
| [Critendon Drilling Service, Inc.](/driller/critendon-drilling-service-inc.md) | 1 | 222 | 150 | 2018 |
| [Felder Water Well & Pump Service, LLC](/driller/felder-water-well-pump-service-llc.md) | 1 | 612 | 150 | 2012 |
| [Evans Drilling](/driller/evans-drilling.md) | 1 | 1,400 | 160 | 2011 |
| [Burleson Services, Inc.](/driller/burleson-services-inc.md) | 1 | 400 | 100 | 2004 |
| [Joe Ferguson Drilling, Inc.](/driller/joe-ferguson-drilling-inc.md) | 1 | 450 | — | 2005 |
| J.C. Thompson Water Well Serv. | 1 | 270 | 60 | 2003 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 247 | 48.4% | 25 |
| Environmental Soil Boring | 227 | 44.5% | 20 |
| Other | 20 | 3.9% | 25 |
| Domestic | 7 | 1.4% | 315 |
| Rig Supply | 7 | 1.4% | 305 |
| Irrigation | 1 | 0.2% | 612 |
| Stock | 1 | 0.2% | 450 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 82 | 25 | 28 |
| 2010s | 208 | 24 | 12 |
| 2020s | 220 | 22 | 13 |

### The deepest reports on file

*Deepest reports in state well grid 80-20. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 249003 | 2011 | 1,400 | 12 | 160 | Rig Supply |
| 308927 | 2012 | 612 | 58 | 150 | Irrigation |
| 526605 | 2019 | 510 | 65 | 60 | Domestic |
| 149523 | 2005 | 450 | — | — | Stock |
| 702364 | 2025 | 445 | — | — | Monitor |
| 179425 | 2004 | 400 | 60 | 100 | Rig Supply |
| 147544 | 2008 | 350 | 28 | 50 | Domestic |
| 148370 | 2008 | 345 | 28 | — | Domestic |
| 372456 | 2014 | 320 | — | — | Rig Supply |
| 114094 | 2007 | 315 | 30 | 35 | Domestic |

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 80-20?

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 [Calhoun County](/county/calhoun.md), [Jackson County](/county/jackson.md), [Bexar County](/county/bexar.md).

### Grids with a comparable number of reports

- [68-08](/area/68-08.md)
- [31-47](/area/31-47.md)
- [68-21](/area/68-21.md)
- [79-57](/area/79-57.md)
- [31-08](/area/31-08.md)
- [57-14](/area/57-14.md)
- [68-26](/area/68-26.md)
- [35-54](/area/35-54.md)
- [67-01](/area/67-01.md)
- [58-09](/area/58-09.md)
- [60-42](/area/60-42.md)
- [61-63](/area/61-63.md)
- [66-05](/area/66-05.md)

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Página: https://texas-water-wells.pages.dev/area/80-20/
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