# Well grid 65-23, Texas — Harris, Colorado — how deep, and through what

> 2,038 well reports in Texas state well grid 65-23, covering Harris, Colorado, Austin. Median depth 25 ft.

## Texas well grid 65-23

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Harris County](/county/harris.md) and [Colorado County](/county/colorado.md). **2,038** reports, median depth **25 ft**.

### What you will drill through in grid 65-23

*Logged in state well grid 65-23, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 119 , **No Recovery** 111 , **Concrete** 109 , **Silty Clay, Drk. Gray** 60 , **Clay, Red** 40 , **Asphalt** 50 |
| 25–50 ft | **Clay, Red** 31 , **Clay** 21 , **Clay, Reddish Brown** 17 , **Clay, Gray** 10 , **Clayey Silt To Sand Silt, Yellowish-Red With Clay Seams** 17 , **Clay, Yellowish-Red** 17 |
| 50–100 ft | **Clay** 16 , **Sand** 16 , **Red, Silty Sand, Wet** 2 , **Clay, Red** 4 , **Sand & Gravel** 4 , **Firm, Red Clay Moist** 2 |
| 100–200 ft | **Clay** 17 , **Sand** 14 , **Sand-Tan-Fine** 1 , **San** 2 , **Soft, Gray, Silty Sand, Wet** 2 , **Soft, Gray Sand, Wet** 2 |
| 200–300 ft | **Clay** 11 , **Sand** 12 , **Sand/Clay** 2 , **Broken Sand & Sandy Shale** 1 , **Shale** 1 , **Very Fine To Medium Sand** 1 |
| 300–500 ft | **Sand** 24 , **Clay** 15 , **Sandy Clay** 2 , **Sand/Gravel** 1 , **Clay/Sand** 2 , **Sand Gray .008** 1 |
| 500–1000 ft | **Sand** 3 , **Clay** 2 , **Shale** 1 , **Clay/Sand** 2 , **Sand/Clay** 2 , **Sandy Shale & Shale** 1 |
| 1000–5000 ft | **Clay** 2 , **Sand** 1 , **Sand/Clay** 1 , **Gravel/Sand** 1 , **Clay/Sand Streaks** 1 |

### Who drills here

*Licensed firms in state well grid 65-23, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 474 | 25 | 10 | 2004–2025 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 342 | 20 | — | 2011–2026 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 174 | 15 | — | 2010–2018 |
| [Advanced Drilling Systems, Inc.](/driller/advanced-drilling-systems-inc.md) | 170 | 25 | — | 2001–2023 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 99 | 15 | — | 2019–2022 |
| [Mathers Environmental Drilling Inc.](/driller/mathers-environmental-drilling-inc.md) | 92 | 28 | — | 2004–2025 |
| [Master Monitoring Services, Inc.](/driller/master-monitoring-services-inc.md) | 91 | 25 | — | 2005–2007 |
| [Alpine Field Services](/driller/alpine-field-services.md) | 87 | 20 | — | 2004–2014 |
| [Van and Sons Drilling Service](/driller/van-and-sons-drilling-service.md) | 36 | 35 | — | 2014–2024 |
| Envirotech Drlling Services | 29 | — | — | 2014 |
| [Groundwater Monitoring Inc.](/driller/groundwater-monitoring-inc.md) | 25 | 20 | — | 2006 |
| [Prospector Drilling and Tool Co., Inc.](/driller/prospector-drilling-and-tool-co-inc.md) | 24 | 52 | — | 2003–2004 |
| Advanced Drillig Systems, Inc. | 23 | — | — | 2006 |
| [Fugro Geosciences, Inc.](/driller/fugro-geosciences-inc.md) | 21 | 38 | — | 2001–2006 |
| [Alliance Maintenance & Services, Inc.](/driller/alliance-maintenance-services-inc.md) | 19 | 21 | — | 2010–2013 |
| [Petra Enviromental Inc.](/driller/petra-enviromental-inc.md) | 19 | 24 | — | 2005 |
| [Soltek LLC](/driller/soltek-llc.md) | 16 | 20 | — | 2015–2022 |
| [O'Day Drilling Company, Inc.](/driller/o-day-drilling-company-inc.md) | 14 | 409 | 60 | 2005–2025 |
| [Remedial Operations Group, Inc.](/driller/remedial-operations-group-inc.md) | 14 | 31 | — | 2004–2008 |
| [dba Universal Drilling Services](/driller/dba-universal-drilling-services.md) | 14 | 22 | — | 2003–2005 |
| [Cascade Drilling](/driller/cascade-drilling.md) | 13 | 45 | — | 2024–2025 |
| [City Survey](/driller/city-survey.md) | 13 | 25 | — | 2012–2019 |
| [Gearen Drilling](/driller/gearen-drilling.md) | 13 | 25 | 0 | 2012–2016 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 13 | 20 | — | 2006–2007 |
| [Hydrex Environmental, Inc.](/driller/hydrex-environmental-inc.md) | 13 | — | — | 2003–2007 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 1,267 | 62.2% | 25 |
| Environmental Soil Boring | 600 | 29.4% | 16 |
| Test Well | 51 | 2.5% | 26 |
| Other | 41 | 2.0% | 40 |
| Injection | 27 | 1.3% | 21 |
| Domestic | 14 | 0.7% | 390 |
| Public Supply | 13 | 0.6% | 467 |
| De-watering | 10 | 0.5% | 63 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1970s | 1 | 730 | — |
| 2000s | 669 | 25 | 15 |
| 2010s | 895 | 20 | 12 |
| 2020s | 473 | 25 | 17 |

### The deepest reports on file

*Deepest reports in state well grid 65-23. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 356698 | 2014 | 1,320 | 168 | 1,708 | Public Supply |
| 273776 | 2011 | 1,170 | 175 | 1,725 | Public Supply |
| 623118 | 1976 | 730 | — | — | Other |
| 13524 | 2002 | 540 | 80 | 80 | Domestic |
| 151348 | 2005 | 530 | 130 | 150 | Irrigation |
| 542684 | 2020 | 498 | 117 | 100 | Public Supply |
| 695497 | 2025 | 495 | 130 | — | Public Supply |
| 279479 | 2012 | 485 | 130 | 60 | Domestic |
| 7689 | 2002 | 484 | 145 | — | Irrigation |
| 175101 | 2005 | 470 | 131 | 150 | Public Supply |

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 65-23?

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 [Harris County](/county/harris.md), [Colorado County](/county/colorado.md), [Austin County](/county/austin.md), [Matagorda County](/county/matagorda.md).

### Grids with a comparable number of reports

- [68-44](/area/68-44.md)
- [28-57](/area/28-57.md)
- [83-13](/area/83-13.md)
- [65-05](/area/65-05.md)
- [68-29](/area/68-29.md)
- [32-10](/area/32-10.md)
- [45-14](/area/45-14.md)
- [45-06](/area/45-06.md)
- [45-07](/area/45-07.md)
- [45-13](/area/45-13.md)
- [32-22](/area/32-22.md)
- [65-29](/area/65-29.md)
- [33-01](/area/33-01.md)

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Página: https://texas-water-wells.pages.dev/area/65-23/
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