# Well grid 66-05, Texas — Austin, Harris — how deep, and through what

> 506 well reports in Texas state well grid 66-05, covering Austin, Harris. Median depth 203 ft.

## Texas well grid 66-05

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Austin County](/county/austin.md) and [Harris County](/county/harris.md). **506** reports, median depth **203 ft**.

### What you will drill through in grid 66-05

*Logged in state well grid 66-05, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 127 , **Sand** 89 , **Shale** 51 , **Top Soil** 49 , **Sandy Top Soil** 43 , **Black Land** 28 |
| 25–50 ft | **Sand** 27 , **Clay** 22 , **Tan Clay** 16 , **Brown + Gray Clay + Rock Mix** 12 , **Fine Brown Sand Rock + Sand** 8 , **Clay & Sand Rock Layers** 7 |
| 50–100 ft | **Sand** 50 , **Brown + Gray Clay** 26 , **Sand & Sandrock Layers** 20 , **Clay & Sandrock Layers** 20 , **Clay** 20 , **Shale** 17 |
| 100–200 ft | **Sand** 107 , **Clay** 59 , **Shale** 53 , **Clay & Sandrock Layers** 23 , **Sand & Sandrock Layers** 20 , **Brown + Gray Clay** 25 |
| 200–300 ft | **Sand** 46 , **Clay** 38 , **Shale** 32 , **Clay & Sand Rock Layers** 8 , **Rock** 7 , **Tan Clay** 7 |
| 300–500 ft | **Sand** 15 , **Clay** 11 , **Shale** 11 , **Brown + Gray Clay** 5 , **Sand & Rock** 3 , **Sand And Rock Stks** 1 |
| 500–1000 ft | **Hard Clay & Rock** 1 , **Solid Rock** 1 , **Hard Clay** 1 , **Hard Shale & Clay** 1 , **Hard Shale & Rock** 1 |

### Who drills here

*Licensed firms in state well grid 66-05, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [A.W. Flentge Service](/driller/a-w-flentge-service.md) | 100 | 200 | 20 | 2002–2023 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 71 | 25 | — | 2012–2015 |
| [WASHINGTON CO WATER WELL DRILLING](/driller/washington-co-water-well-drilling.md) | 57 | 210 | 30 | 2015–2026 |
| [Leon Flentge Water Well Drilling and Service](/driller/leon-flentge-water-well-drilling-and-service.md) | 57 | 200 | 40 | 2006–2013 |
| [J&S WATER WELLS](/driller/j-s-water-wells.md) | 33 | 360 | 70 | 2006–2026 |
| [Leon Flentge Water Well Drilling](/driller/leon-flentge-water-well-drilling.md) | 23 | 228 | 40 | 2013–2020 |
| [Neuendorff's Water Well Service, Inc.](/driller/neuendorff-s-water-well-service-inc.md) | 19 | 195 | 40 | 2016–2025 |
| [Flentge Water Well Drilling and Service](/driller/flentge-water-well-drilling-and-service.md) | 12 | 195 | 30 | 2005–2006 |
| [Burleson Services, Inc.](/driller/burleson-services-inc.md) | 11 | 300 | 85 | 2003–2010 |
| [Busselman Water Wells, LLC](/driller/busselman-water-wells-llc.md) | 9 | 242 | 40 | 2024–2026 |
| [Texas Southern Drilling](/driller/texas-southern-drilling.md) | 9 | 205 | 30 | 2020–2025 |
| [HEFLIN WATER WORKS](/driller/heflin-water-works.md) | 8 | 225 | 35 | 2007–2023 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 7 | 25 | — | 2025–2026 |
| [Washington County Water Well Drilling](/driller/washington-county-water-well-drilling.md) | 7 | 188 | 25 | 2008–2013 |
| [Neuendorff's Water Well Svc., Inc.](/driller/neuendorff-s-water-well-svc-inc.md) | 7 | 163 | 45 | 2006–2012 |
| [Ricky Bonds Water Wells](/driller/ricky-bonds-water-wells.md) | 6 | 245 | 40 | 2011–2021 |
| [Skutca Water Well](/driller/skutca-water-well.md) | 6 | 155 | 40 | 2003–2020 |
| Flentge Water Well Drilling & Serv. | 4 | 160 | 40 | 2003–2005 |
| [Cobra Water Well Drilling, LLC.](/driller/cobra-water-well-drilling-llc.md) | 3 | 175 | 20 | 2018–2025 |
| [TIM FRANKS WATER WELL SERVICE](/driller/tim-franks-water-well-service.md) | 3 | 265 | 40 | 2025 |
| [B&R WATER WELL DRILLING, LLC](/driller/b-r-water-well-drilling-llc.md) | 3 | 270 | 50 | 2020–2025 |
| MESECKE WATER WELL ENTERPRISES, INC. | 3 | 295 | — | 2019–2020 |
| [Ballard Water Well Co. LLC](/driller/ballard-water-well-co-llc.md) | 3 | 175 | 50 | 2015–2022 |
| [Geophysical Drilling, Inc.](/driller/geophysical-drilling-inc.md) | 3 | 296 | 35 | 2009–2019 |
| Leon Flentge Water Well Drilling & Service | 3 | 250 | 40 | 2013 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 362 | 71.5% | 200 |
| Environmental Soil Boring | 52 | 10.3% | 25 |
| Monitor | 28 | 5.5% | 25 |
| Irrigation | 21 | 4.2% | 300 |
| Stock | 17 | 3.4% | 240 |
| Rig Supply | 12 | 2.4% | 285 |
| Industrial | 7 | 1.4% | 410 |
| Public Supply | 3 | 0.6% | 345 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 167 | 180 | 84 |
| 2010s | 215 | 210 | 105 |
| 2020s | 124 | 210 | 102 |

### The deepest reports on file

*Deepest reports in state well grid 66-05. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 244357 | 2007 | 870 | — | — | Test Well |
| 410989 | 2015 | 510 | 200 | 120 | Irrigation |
| 395122 | 2015 | 510 | 160 | 130 | Irrigation |
| 546991 | 2020 | 470 | 180 | 50 | Domestic |
| 575365 | 2021 | 450 | 225 | 35 | Other |
| 424397 | 2016 | 450 | 148 | 60 | Domestic |
| 379366 | 2014 | 450 | 90 | 60 | Domestic |
| 332727 | 2005 | 430 | 281 | 154 | Public Supply |
| 261791 | 2011 | 420 | 156 | 38 | Domestic |
| 261790 | 2011 | 420 | 156 | 38 | 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 66-05?

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 [Austin County](/county/austin.md), [Harris County](/county/harris.md).

### Grids with a comparable number of reports

- [68-26](/area/68-26.md)
- [80-20](/area/80-20.md)
- [35-54](/area/35-54.md)
- [67-01](/area/67-01.md)
- [58-09](/area/58-09.md)
- [60-42](/area/60-42.md)
- [61-63](/area/61-63.md)
- [28-48](/area/28-48.md)
- [59-64](/area/59-64.md)
- [60-62](/area/60-62.md)
- [16-39](/area/16-39.md)
- [27-28](/area/27-28.md)
- [80-02](/area/80-02.md)

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Página: https://texas-water-wells.pages.dev/area/66-05/
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