# Well grid 66-16, Texas — Austin, Waller — how deep, and through what

> 516 well reports in Texas state well grid 66-16, covering Austin, Waller, Matagorda. Median depth 205 ft.

## Texas well grid 66-16

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Austin County](/county/austin.md) and [Waller County](/county/waller.md). **516** reports, median depth **205 ft**.

### What you will drill through in grid 66-16

*Logged in state well grid 66-16, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 146 , **Sand** 113 , **Red Clay** 71 , **Top Soil** 53 , **Topsoil** 36 , **Clay, Sand** 20 |
| 25–50 ft | **Sand** 63 , **Clay** 42 , **Gravel** 33 , **Rock** 24 , **Red Clay** 12 , **Sand/Gravel** 9 |
| 50–100 ft | **Clay** 91 , **Sand** 73 , **Rock** 37 , **Gravel** 22 , **White Clay** 15 , **Red Clay** 16 |
| 100–200 ft | **Sand** 203 , **Clay** 140 , **Rock** 66 , **Red Clay** 27 , **White Clay** 23 , **Clay, Sand** 15 |
| 200–300 ft | **Sand** 94 , **Clay** 60 , **Rock** 26 , **Red Clay** 11 , **Tan Clay** 10 , **Clay, Sand** 8 |
| 300–500 ft | **Sand** 33 , **Clay** 16 , **Rock** 6 , **Clay, Rock** 2 , **Rock, Sand** 2 , **Shale** 1 |
| 500–1000 ft | **Clay** 3 , **Sand** 2 , **Caliche Clay Sand** 1 , **Rock** 1 , **Shale** 1 |

### Who drills here

*Licensed firms in state well grid 66-16, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Geophysical Drilling, Inc.](/driller/geophysical-drilling-inc.md) | 81 | 252 | 75 | 2003–2022 |
| [Ricky Bonds Water Wells](/driller/ricky-bonds-water-wells.md) | 51 | 225 | 60 | 2004–2026 |
| [Skutca Water Well](/driller/skutca-water-well.md) | 27 | 165 | 50 | 2003–2013 |
| [A.W. Flentge Service](/driller/a-w-flentge-service.md) | 24 | 163 | 25 | 2002–2020 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 21 | 37 | — | 2007–2016 |
| [Bluebonnet Water Wells](/driller/bluebonnet-water-wells.md) | 19 | 210 | 55 | 2024–2026 |
| [NORTHWEST WATER WELLS](/driller/northwest-water-wells.md) | 19 | 230 | 70 | 2002–2010 |
| [Main Stream Environmental](/driller/main-stream-environmental.md) | 18 | 200 | 45 | 2017–2025 |
| [O'Day Drilling Company, Inc.](/driller/o-day-drilling-company-inc.md) | 15 | 389 | 80 | 2002–2020 |
| [HEFLIN WATER WORKS](/driller/heflin-water-works.md) | 14 | 190 | 50 | 2004–2016 |
| [Kenco Water Well Service](/driller/kenco-water-well-service.md) | 13 | 241 | 60 | 1999–2010 |
| [Burleson Services, Inc.](/driller/burleson-services-inc.md) | 13 | 180 | 90 | 2003–2007 |
| [Neuendorff's Water Well Service, Inc.](/driller/neuendorff-s-water-well-service-inc.md) | 12 | 200 | 60 | 2016–2025 |
| [AQUA STAR LLC](/driller/aqua-star-llc.md) | 12 | 240 | 50 | 2015–2024 |
| [Leon Flentge Water Well Drilling and Service](/driller/leon-flentge-water-well-drilling-and-service.md) | 12 | 204 | 55 | 2004–2013 |
| [Texas Southern Drilling](/driller/texas-southern-drilling.md) | 11 | 185 | 40 | 2021–2025 |
| [1st Choice Water Wells](/driller/1st-choice-water-wells.md) | 11 | 182 | 50 | 2013–2019 |
| [Mesecke Water Well](/driller/mesecke-water-well.md) | 9 | 210 | 18 | 2004–2015 |
| [Kenco Water Well Svc](/driller/kenco-water-well-svc.md) | 8 | 207 | 65 | 2010–2022 |
| [Leon Flentge Water Well Drilling](/driller/leon-flentge-water-well-drilling.md) | 8 | 240 | 80 | 2013–2017 |
| [Terra Power Drilling LLC](/driller/terra-power-drilling-llc.md) | 8 | 180 | 35 | 2009–2015 |
| [Ondrey Water Well Service](/driller/ondrey-water-well-service.md) | 7 | 225 | — | 2007–2017 |
| [Neuendorff's Water Well Svc., Inc.](/driller/neuendorff-s-water-well-svc-inc.md) | 7 | 140 | 70 | 2005–2011 |
| [Scott Drilling Inc.](/driller/scott-drilling-inc.md) | 6 | 200 | 50 | 2013–2021 |
| [TIM FRANKS WATER WELL SERVICE](/driller/tim-franks-water-well-service.md) | 5 | 205 | 75 | 2023–2025 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 420 | 81.4% | 205 |
| Irrigation | 28 | 5.4% | 253 |
| Monitor | 14 | 2.7% | 65 |
| Rig Supply | 13 | 2.5% | 200 |
| Stock | 12 | 2.3% | 198 |
| Industrial | 9 | 1.7% | 240 |
| Other | 6 | 1.2% | 222 |
| Environmental Soil Boring | 5 | 1.0% | 8 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1960s | 1 | 165 | 25 |
| 1990s | 1 | 180 | 60 |
| 2000s | 206 | 200 | 56 |
| 2010s | 184 | 205 | 55 |
| 2020s | 124 | 210 | 57 |

### The deepest reports on file

*Deepest reports in state well grid 66-16. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 531539 | 2020 | 624 | 110 | 60 | Domestic |
| 38409 | 2003 | 561 | 151 | 80 | Domestic |
| 613033 | 2022 | 530 | 35 | 140 | Irrigation |
| 486811 | 2018 | 510 | 60 | 60 | Irrigation |
| 276626 | 2011 | 485 | 90 | 360 | Public Supply |
| 168450 | 2004 | 480 | 78 | 100 | Domestic |
| 156442 | 2008 | 480 | 150 | 80 | Industrial |
| 38413 | 2003 | 474 | 155 | 80 | Domestic |
| 658549 | 2023 | 450 | 60 | 150 | Domestic |
| 417978 | 2016 | 440 | 100 | 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 66-16?

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), [Waller County](/county/waller.md), [Matagorda County](/county/matagorda.md), [Chambers County](/county/chambers.md), [Fayette County](/county/fayette.md).

### Grids with a comparable number of reports

- [59-59](/area/59-59.md)
- [66-32](/area/66-32.md)
- [30-34](/area/30-34.md)
- [66-54](/area/66-54.md)
- [28-17](/area/28-17.md)
- [45-25](/area/45-25.md)
- [68-24](/area/68-24.md)
- [68-08](/area/68-08.md)
- [31-47](/area/31-47.md)
- [68-21](/area/68-21.md)
- [79-57](/area/79-57.md)
- [31-08](/area/31-08.md)
- [57-14](/area/57-14.md)

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Página: https://texas-water-wells.pages.dev/area/66-16/
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