# Well grid 30-37, Texas — Callahan — how deep, and through what

> 203 well reports in Texas state well grid 30-37, covering Callahan. Median depth 50 ft.

## Texas well grid 30-37

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Callahan County](/county/callahan.md). **203** reports, median depth **50 ft**.

### What you will drill through in grid 30-37

*Logged in state well grid 30-37, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Sand** 51 , **Top Soil** 50 , **Sandy Clay** 43 , **Brown Clay** 30 , **Red Clay** 24 , **Sand & Gravel** 19 |
| 25–50 ft | **Yellow Shale** 27 , **Sand & Gravel** 21 , **Yellow Clay** 14 , **Gravel** 13 , **Water Sand** 10 , **Sand And Gravel** 9 |
| 50–100 ft | **Yellow Clay** 8 , **Yellow Shale** 7 , **Blue Shale** 5 , **Blue Clay And Shale** 4 , **Sand & Gravel** 4 , **Tan Limestone** 2 |
| 100–200 ft | **Blue Shale** 2 , **Blue Clay** 2 , **Blue Shale And Limestone Stringers** 1 , **Red Rock** 2 , **Water Sand** 2 , **Yellow Clay** 2 |
| 200–300 ft | **White/Gray Rock** 1 , **Blue Clay And Shale** 1 |

### Who drills here

*Licensed firms in state well grid 30-37, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Diversified Water Well Drilling](/driller/diversified-water-well-drilling.md) | 48 | 50 | 15 | 2003–2017 |
| [White Drilling Company, Inc.](/driller/white-drilling-company-inc.md) | 29 | 54 | — | 2002–2021 |
| [Zavala Drilling, CO](/driller/zavala-drilling-co.md) | 18 | 46 | 12 | 2007–2013 |
| [Moore's Pump & Supply](/driller/moore-s-pump-supply.md) | 14 | 56 | 12 | 2003–2016 |
| [LEONARD WATER SERVICES](/driller/leonard-water-services.md) | 13 | 51 | 20 | 2002–2025 |
| [Peterson Drilling & Testing, Inc.](/driller/peterson-drilling-testing-inc.md) | 13 | — | — | 2005–2006 |
| [Michael Gilliam Consultant Services](/driller/michael-gilliam-consultant-services.md) | 12 | 105 | 0 | 2014–2021 |
| [T&T Drilling](/driller/t-t-drilling.md) | 7 | 20 | — | 2003 |
| [Leonard Water Service](/driller/leonard-water-service.md) | 6 | 51 | — | 2002–2008 |
| [DAVIS ENVIRONMENTAL DRILLING](/driller/davis-environmental-drilling.md) | 4 | 20 | — | 2003 |
| [WEST Drilling](/driller/west-drilling.md) | 3 | 18 | — | 2017 |
| [A&W Drilling Services, Ltd.](/driller/a-w-drilling-services-ltd.md) | 3 | 51 | — | 2011 |
| [Savage Excavation](/driller/savage-excavation.md) | 2 | 13 | — | 2025 |
| [Sunbelt Industrial Services](/driller/sunbelt-industrial-services.md) | 2 | 12 | — | 2017 |
| Diversified Water Well | 2 | — | 10 | 2015 |
| [qualls drilling](/driller/qualls-drilling.md) | 2 | 22 | — | 2014 |
| DIVERSIFIED WATER WELLS | 2 | 50 | 20 | 2009–2011 |
| [GM Enterprises](/driller/gm-enterprises.md) | 2 | 15 | — | 2009 |
| Peterson Drilling and Testing, Inc. | 2 | — | — | 2008 |
| [T & T Drilling, LTD](/driller/t-t-drilling-ltd.md) | 2 | 30 | — | 2006–2007 |
| [SKG Engineering, LLC](/driller/skg-engineering-llc.md) | 1 | 30 | — | 2025 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 1 | 15 | — | 2023 |
| [Geothermal Drilling inc](/driller/geothermal-drilling-inc.md) | 1 | 300 | — | 2023 |
| [Beaird Water Well](/driller/beaird-water-well.md) | 1 | 55 | 18 | 2020 |
| [SIMMONS WATER WELL SERVICE](/driller/simmons-water-well-service.md) | 1 | 60 | — | 2019 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Irrigation | 105 | 51.7% | 50 |
| Monitor | 36 | 17.7% | 20 |
| Domestic | 35 | 17.2% | 54 |
| Stock | 10 | 4.9% | 58 |
| Environmental Soil Boring | 9 | 4.4% | 20 |
| Test Well | 6 | 3.0% | 15 |
| Closed-Loop Geothermal | 1 | 0.5% | 300 |
| Other | 1 | 0.5% | 204 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 84 | 45 | 21 |
| 2010s | 96 | 52 | 25 |
| 2020s | 23 | 50 | 19 |

### The deepest reports on file

*Deepest reports in state well grid 30-37. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 639252 | 2023 | 300 | — | — | Closed-Loop Geothermal |
| 492611 | 2018 | 204 | — | 0 | Irrigation |
| 490841 | 2018 | 204 | — | — | Other |
| 114925 | 2007 | 188 | 23 | — | Irrigation |
| 275398 | 2011 | 140 | 90 | 6 | Irrigation |
| 53810 | 2005 | 140 | 107 | — | Irrigation |
| 384726 | 2014 | 133 | 113 | 15 | Domestic |
| 384728 | 2014 | 130 | 120 | 12 | Domestic |
| 569919 | 2021 | 128 | 69 | — | Irrigation |
| 509063 | 2019 | 125 | 70 | — | 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 30-37?

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 [Callahan County](/county/callahan.md).

### Grids with a comparable number of reports

- [46-16](/area/46-16.md)
- [59-12](/area/59-12.md)
- [80-22](/area/80-22.md)
- [19-28](/area/19-28.md)
- [79-05](/area/79-05.md)
- [03-34](/area/03-34.md)
- [23-20](/area/23-20.md)
- [37-31](/area/37-31.md)
- [66-56](/area/66-56.md)
- [03-42](/area/03-42.md)
- [17-64](/area/17-64.md)
- [19-33](/area/19-33.md)
- [78-04](/area/78-04.md)

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Página: https://texas-water-wells.pages.dev/area/30-37/
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