# Well grid 81-04, Texas — Brazoria, Matagorda — how deep, and through what

> 379 well reports in Texas state well grid 81-04, covering Brazoria, Matagorda, Brooks. Median depth 490 ft.

## Texas well grid 81-04

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Brazoria County](/county/brazoria.md) and [Matagorda County](/county/matagorda.md). **379** reports, median depth **490 ft**.

### What you will drill through in grid 81-04

*Logged in state well grid 81-04, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 193 , **Sand** 22 , **Surface Soil** 17 , **Top Soil** 14 , **Soil** 8 , **Clay (Ch) - Reddish Brown, Stiff, High Plasticity, Moist** 4 |
| 25–50 ft | **Sand** 47 , **Clay** 12 , **Red Clay** 3 , **Gray Clay** 2 , **Sand .006 .008** 2 , **Sand Tan .008-.020** 2 |
| 50–100 ft | **Sand** 129 , **Clay** 122 , **Red Clay** 7 , **Clay Td** 5 , **Clay, Red-Brown** 4 , **Sand Red** 4 |
| 100–200 ft | **Clay** 119 , **Sand** 107 , **Red Clay** 8 , **Clay Td** 8 , **Sand .006** 7 , **Sand .006 .008** 2 |
| 200–300 ft | **Clay** 97 , **Sand** 70 , **Sand .006 .008 .010** 2 , **Sand Fine** 2 , **Red Clay** 2 , **Sand-Tan-Fine Sand-Tan-.006-.008** 2 |
| 300–500 ft | **Sand** 130 , **Clay** 84 , **Clay Td** 37 , **Red Clay** 5 , **Sand Fine** 5 , **Sand, Fine** 2 |
| 500–1000 ft | **Sand** 64 , **Clay Td** 55 , **Clay** 35 , **Sand .006** 3 , **Sand .012** 3 , **Clay T.D.** 3 |
| 1000–5000 ft | **Sand** 4 , **Clay** 3 |

### Who drills here

*Licensed firms in state well grid 81-04, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Goolsby Water Well Service LLC](/driller/goolsby-water-well-service-llc.md) | 80 | 505 | 60 | 2015–2026 |
| [RONNIE GOOLSBY WATER WELL](/driller/ronnie-goolsby-water-well.md) | 72 | 515 | 40 | 2002–2015 |
| [RONNIE GOOLSBY WATER WELL SERVICE](/driller/ronnie-goolsby-water-well-service.md) | 58 | 525 | 50 | 2002–2014 |
| [Finch Water Well](/driller/finch-water-well.md) | 28 | 525 | 60 | 2001–2025 |
| [Felder Water Well & Pump Service, LLC](/driller/felder-water-well-pump-service-llc.md) | 23 | 465 | 65 | 2006–2024 |
| [Finch Water Well Service](/driller/finch-water-well-service.md) | 17 | — | 60 | 2004–2008 |
| [Brazoria Water Well](/driller/brazoria-water-well.md) | 9 | 500 | 50 | 2023–2026 |
| [Goolsby Water Well](/driller/goolsby-water-well.md) | 9 | 540 | 30 | 2001–2013 |
| [O'Day Drilling Company, Inc.](/driller/o-day-drilling-company-inc.md) | 8 | 531 | 200 | 2003–2022 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 6 | 30 | — | 2019–2024 |
| [Professional Service Inc.](/driller/professional-service-inc.md) | 6 | — | — | 2015 |
| [GWR Windmills & Water Well Services, LLC](/driller/gwr-windmills-water-well-services-llc.md) | 5 | 520 | 100 | 2020–2025 |
| [Almeda Water Well Service](/driller/almeda-water-well-service.md) | 4 | 437 | 75 | 2010–2021 |
| [Advanced Drilling Systems, Inc.](/driller/advanced-drilling-systems-inc.md) | 4 | 460 | — | 2019 |
| GOOLSBY W.W. | 4 | 525 | 50 | 2011–2014 |
| [ANCHOR WATER WELL](/driller/anchor-water-well.md) | 4 | 524 | 80 | 2003–2014 |
| Professional Service Ind, Inc. | 4 | 25 | — | 2014 |
| [MEZA WATER WELL SERVICE](/driller/meza-water-well-service.md) | 3 | 195 | — | 2020–2021 |
| [Chaffin Water Wells](/driller/chaffin-water-wells.md) | 3 | 160 | 110 | 2015–2020 |
| [GOOLSBY WW](/driller/goolsby-ww.md) | 3 | 535 | 50 | 2011–2014 |
| [MARAL DRILLING](/driller/maral-drilling.md) | 2 | 485 | 25 | 2019–2024 |
| [Gotcher Water Well](/driller/gotcher-water-well.md) | 2 | 150 | 115 | 2018–2023 |
| [1st Choice Water Wells](/driller/1st-choice-water-wells.md) | 2 | 540 | 40 | 2020 |
| [PSI](/driller/psi.md) | 2 | 40 | — | 2016 |
| [Felder Water Well](/driller/felder-water-well.md) | 2 | 251 | 150 | 2010–2013 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 296 | 78.1% | 515 |
| Stock | 24 | 6.3% | 165 |
| Monitor | 23 | 6.1% | 35 |
| Rig Supply | 13 | 3.4% | 156 |
| Public Supply | 10 | 2.6% | 305 |
| Industrial | 7 | 1.8% | 1,158 |
| Irrigation | 3 | 0.8% | 65 |
| Other | 2 | 0.5% | 195 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 124 | 505 | 42 |
| 2010s | 164 | 485 | 45 |
| 2020s | 91 | 490 | 48 |

### The deepest reports on file

*Deepest reports in state well grid 81-04. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 391126 | 2015 | 1,208 | 55 | 2,650 | Industrial |
| 391125 | 2015 | 1,208 | 55 | 2,650 | Industrial |
| 391464 | 2015 | 1,158 | 54 | 1,850 | Industrial |
| 688012 | 2024 | 630 | 37 | 100 | Domestic |
| 488023 | 2018 | 630 | 50 | 30 | Stock |
| 357351 | 2014 | 625 | 45 | 70 | Domestic |
| 568594 | 2021 | 615 | 47 | 150 | Public Supply |
| 94789 | 2006 | 605 | 31 | 60 | Domestic |
| 546735 | 2020 | 600 | 50 | 50 | Domestic |
| 269081 | 2011 | 600 | 45 | 70 | 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 81-04?

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 [Brazoria County](/county/brazoria.md), [Matagorda County](/county/matagorda.md), [Brooks County](/county/brooks.md), [Harris County](/county/harris.md).

### Grids with a comparable number of reports

- [59-47](/area/59-47.md)
- [65-01](/area/65-01.md)
- [66-13](/area/66-13.md)
- [66-06](/area/66-06.md)
- [34-33](/area/34-33.md)
- [66-20](/area/66-20.md)
- [02-61](/area/02-61.md)
- [35-37](/area/35-37.md)
- [65-62](/area/65-62.md)
- [66-40](/area/66-40.md)
- [79-03](/area/79-03.md)
- [18-51](/area/18-51.md)
- [79-58](/area/79-58.md)

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Página: https://texas-water-wells.pages.dev/area/81-04/
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