# Well grid 77-23, Texas — Frio, La Salle — how deep, and through what

> 126 well reports in Texas state well grid 77-23, covering Frio, La Salle, Goliad. Median depth 260 ft.

## Texas well grid 77-23

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Frio County](/county/frio.md) and [La Salle County](/county/la-salle.md). **126** reports, median depth **260 ft**.

### What you will drill through in grid 77-23

*Logged in state well grid 77-23, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Surface** 34 , **Clay** 13 , **Sandy Clay** 12 , **Concrete** 10 , **Sandstone** 10 , **Top Soil** 9 |
| 25–50 ft | **Shale** 6 , **Blue Shale** 5 , **Clay** 3 , **Yellow Clay** 3 , **Gravel** 2 , **Caliche** 2 |
| 50–100 ft | **Shale** 9 , **Sand** 5 , **Blue Shale** 5 , **Sandy Shale** 5 , **Clay/Sand** 2 , **Shale/Sand** 2 |
| 100–200 ft | **Sand** 24 , **Sandy Shale** 13 , **Shale** 8 , **Sandy** 2 , **Clay** 1 , **Hard Rock** 1 |
| 200–300 ft | **Sand** 25 , **Shale** 18 , **Rock** 3 , **Sandy Shale** 4 , **Blue Shale** 2 , **Shale & Sand / Td** 1 |
| 300–500 ft | **Shale** 6 , **Sandy Shale** 5 , **Sand/Shale** 2 , **Sand** 1 , **Sand & Shale** 1 , **Sandy Clay** 1 |
| 500–1000 ft | **Shale** 8 , **Sand** 2 , **Shale, Rock Layers** 1 , **Sandy Shale** 1 |
| 1000–5000 ft | **Shale** 7 , **Sand** 6 , **Carrizo Sand** 5 , **Sandy Shale** 3 , **Sand, Shale Layers** 3 , **Sand & Shale** 1 |

### Who drills here

*Licensed firms in state well grid 77-23, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 55 | 15 | — | 2007–2018 |
| [Cruz Drilling](/driller/cruz-drilling.md) | 30 | 260 | 45 | 2003–2015 |
| [Mathers Environmental Drilling Inc.](/driller/mathers-environmental-drilling-inc.md) | 9 | 10 | — | 2020 |
| [McKinley Drilling](/driller/mckinley-drilling.md) | 7 | 2,025 | 1,000 | 2009–2022 |
| [Dennis Drilling Company](/driller/dennis-drilling-company.md) | 6 | 300 | — | 2006–2022 |
| [Bull's Eye Services, LLC](/driller/bull-s-eye-services-llc.md) | 6 | 345 | 17 | 2012–2024 |
| [Unison Drilling Inc](/driller/unison-drilling-inc.md) | 3 | 2,400 | 300 | 2011–2012 |
| [Thomas Moy and Sons Water Well Drilling Inc.](/driller/thomas-moy-and-sons-water-well-drilling-inc.md) | 2 | 300 | 70 | 2025–2026 |
| [Water Well Services, Inc.](/driller/water-well-services-inc.md) | 2 | 2,104 | 800 | 2012–2014 |
| [SHEPHERD DRILLING](/driller/shepherd-drilling.md) | 1 | 240 | 20 | 2024 |
| [I&I Pump Service](/driller/i-i-pump-service.md) | 1 | — | — | 2015 |
| [Thomas Moy & Sons](/driller/thomas-moy-sons.md) | 1 | 533 | 25 | 2008 |
| Everett Carroll Water Well Service & Drilling Co. | 1 | 160 | 35 | 2003 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 61 | 48.4% | 10 |
| Domestic | 43 | 34.1% | 260 |
| Irrigation | 8 | 6.3% | 2,002 |
| Rig Supply | 4 | 3.2% | 2,400 |
| Industrial | 3 | 2.4% | 2,133 |
| Monitor | 3 | 2.4% | 21 |
| Stock | 2 | 1.6% | 260 |
| Public Supply | 1 | 0.8% | 2,104 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 21 | 245 | 95 |
| 2010s | 88 | 260 | 140 |
| 2020s | 17 | 10 | 140 |

### The deepest reports on file

*Deepest reports in state well grid 77-23. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 282205 | 2012 | 2,464 | 220 | 588 | Rig Supply |
| 299747 | 2012 | 2,400 | 475 | 300 | Rig Supply |
| 442646 | 2017 | 2,192 | 414 | 600 | Rig Supply |
| 312909 | 2012 | 2,133 | 420 | 200 | Industrial |
| 386817 | 2014 | 2,104 | 540 | 800 | Public Supply |
| 284893 | 2012 | 2,065 | 383 | 300 | Fracking Supply |
| 352489 | 2013 | 2,025 | 575 | 1,000 | Irrigation |
| 268865 | 2011 | 2,019 | 480 | 1,200 | Irrigation |
| 639194 | 2022 | 2,002 | 522 | 1,000 | Irrigation |
| 225732 | 2008 | 533 | 131 | 25 | 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 77-23?

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 [Frio County](/county/frio.md), [La Salle County](/county/la-salle.md), [Goliad County](/county/goliad.md).

### Grids with a comparable number of reports

- [03-62](/area/03-62.md)
- [05-35](/area/05-35.md)
- [16-48](/area/16-48.md)
- [57-57](/area/57-57.md)
- [59-02](/area/59-02.md)
- [61-16](/area/61-16.md)
- [66-50](/area/66-50.md)
- [80-12](/area/80-12.md)
- [10-28](/area/10-28.md)
- [19-12](/area/19-12.md)
- [23-53](/area/23-53.md)
- [30-18](/area/30-18.md)
- [31-24](/area/31-24.md)

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Página: https://texas-water-wells.pages.dev/area/77-23/
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