# Well grid 65-20, Texas — Harris, Fort Bend — how deep, and through what

> 1,695 well reports in Texas state well grid 65-20, covering Harris, Fort Bend, Brazoria. Median depth 30 ft.

## Texas well grid 65-20

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Harris County](/county/harris.md) and [Fort Bend County](/county/fort-bend.md). **1,695** reports, median depth **30 ft**.

### What you will drill through in grid 65-20

*Logged in state well grid 65-20, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Concrete** 259 , **No Recovery** 107 , **Clay** 131 , **Asphalt** 85 , **Silty Clay, Gray** 50 , **Sand** 47 |
| 25–50 ft | **Sand** 47 , **Clay** 44 , **Clay, Red** 31 , **No Recovery** 24 , **Clay, Reddish Brown** 24 , **Silty Clay, Lt. Gray** 13 |
| 50–100 ft | **Clay** 39 , **Sand** 38 , **Clay, Red** 6 , **Clay-Red** 6 , **Red Clay** 6 , **Ft. Clay, Red Brown** 4 |
| 100–200 ft | **Sand** 64 , **Clay** 45 , **Red Clay** 7 , **Clay-Red** 7 , **Gray Sandy Clay** 4 , **Shale** 2 |
| 200–300 ft | **Sand** 69 , **Clay** 41 , **Red Clay** 6 , **Clay-Red** 6 , **Shale** 2 , **Sandy Gray Shale** 3 |
| 300–500 ft | **Sand** 41 , **Clay** 28 , **Rock** 7 , **Shale** 3 , **Red Clay** 4 , **Sand .008** 3 |
| 500–1000 ft | **Sand** 7 , **Clay** 5 , **Clay (Gray)** 1 , **Clay (Tan)** 1 , **Clay (Light Gray)** 1 , **Sandy Clay** 1 |
| 1000–5000 ft | **Sand** 3 , **Clay (Gray)** 2 , **Clay** 2 , **Clay (Whitish Gray)** 2 , **Clay (Tan)** 1 , **Clay (White)** 1 |

### Who drills here

*Licensed firms in state well grid 65-20, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 500 | 30 | — | 2004–2025 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 268 | 30 | — | 2011–2026 |
| [Mathers Environmental Drilling Inc.](/driller/mathers-environmental-drilling-inc.md) | 177 | 30 | — | 2002–2025 |
| [Alpine Field Services](/driller/alpine-field-services.md) | 173 | 29 | — | 2004–2016 |
| [Advanced Drilling Systems, Inc.](/driller/advanced-drilling-systems-inc.md) | 56 | 20 | — | 2003–2026 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 43 | 15 | — | 2014 |
| [Soltek LLC](/driller/soltek-llc.md) | 41 | 22 | — | 2015–2023 |
| [Master Monitoring Services, Inc.](/driller/master-monitoring-services-inc.md) | 39 | 20 | — | 1999–2007 |
| [Scott Drilling Inc.](/driller/scott-drilling-inc.md) | 38 | 290 | 50 | 2002–2025 |
| [Fugro Geosciences, Inc.](/driller/fugro-geosciences-inc.md) | 36 | 57 | — | 2002–2005 |
| [City Survey](/driller/city-survey.md) | 20 | 30 | — | 2009–2022 |
| [Van and Sons Drilling Service](/driller/van-and-sons-drilling-service.md) | 20 | 30 | — | 2014–2018 |
| [Petra Environmental](/driller/petra-environmental.md) | 20 | 20 | — | 2001–2002 |
| [Universal Drilling Services of Texas, LLC](/driller/universal-drilling-services-of-texas-llc.md) | 16 | — | — | 2007–2008 |
| [Almeda Water Well Service](/driller/almeda-water-well-service.md) | 14 | 390 | 80 | 2004–2024 |
| [Gearen Drilling](/driller/gearen-drilling.md) | 14 | 50 | 0 | 2011–2015 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 14 | 15 | — | 2006–2014 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 14 | 30 | — | 2007–2013 |
| [O'Day Drilling Company, Inc.](/driller/o-day-drilling-company-inc.md) | 13 | 380 | 45 | 2003–2018 |
| [Gainco, Inc.](/driller/gainco-inc.md) | 12 | 25 | — | 2011–2013 |
| [Geophysical Drilling, Inc.](/driller/geophysical-drilling-inc.md) | 11 | 336 | 65 | 2003–2016 |
| [Fugro USA Land, Inc.](/driller/fugro-usa-land-inc.md) | 10 | 37 | — | 2019 |
| [Tolunay-Wong Engineers,Inc](/driller/tolunay-wong-engineers-inc.md) | 10 | 26 | — | 2014–2016 |
| [ESN-South](/driller/esn-south.md) | 9 | 15 | — | 2006 |
| Alpine Field Service Inc. | 7 | — | — | 2013 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 1,189 | 70.1% | 30 |
| Environmental Soil Boring | 271 | 16.0% | 15 |
| Domestic | 93 | 5.5% | 320 |
| Test Well | 56 | 3.3% | 30 |
| Other | 45 | 2.7% | 35 |
| Irrigation | 18 | 1.1% | 401 |
| Public Supply | 11 | 0.6% | 900 |
| Injection | 5 | 0.3% | 25 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1970s | 1 | 1,010 | — |
| 1990s | 1 | 46 | 50 |
| 2000s | 684 | 30 | 25 |
| 2010s | 672 | 30 | 18 |
| 2020s | 337 | 30 | 27 |

### The deepest reports on file

*Deepest reports in state well grid 65-20. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 51737 | 2005 | 2,130 | 299 | 2,100 | Public Supply |
| 23793 | 2003 | 2,070 | 345 | — | Public Supply |
| 659789 | 2024 | 1,400 | 283 | 2,514 | Public Supply |
| 639077 | 1972 | 1,010 | — | 970 | Public Supply |
| 61024 | 2003 | 900 | 238 | 1,205 | Public Supply |
| 126031 | 2007 | 750 | 225 | 1,402 | Public Supply |
| 53974 | 2003 | 708 | 210 | 400 | Domestic |
| 13738 | 2002 | 580 | 60 | 30 | Domestic |
| 219530 | 2006 | 498 | 195 | 400 | Irrigation |
| 704837 | 2025 | 490 | 175 | — | Other |

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 65-20?

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 [Harris County](/county/harris.md), [Fort Bend County](/county/fort-bend.md), [Brazoria County](/county/brazoria.md).

### Grids with a comparable number of reports

- [33-02](/area/33-02.md)
- [45-12](/area/45-12.md)
- [65-06](/area/65-06.md)
- [33-03](/area/33-03.md)
- [65-12](/area/65-12.md)
- [45-05](/area/45-05.md)
- [58-42](/area/58-42.md)
- [33-18](/area/33-18.md)
- [23-25](/area/23-25.md)
- [65-04](/area/65-04.md)
- [32-20](/area/32-20.md)
- [32-05](/area/32-05.md)
- [06-44](/area/06-44.md)

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Página: https://texas-water-wells.pages.dev/area/65-20/
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