# Well grid 66-15, Texas — Austin, Fort Bend — how deep, and through what

> 364 well reports in Texas state well grid 66-15, covering Austin, Fort Bend. Median depth 195 ft.

## Texas well grid 66-15

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Austin County](/county/austin.md) and [Fort Bend County](/county/fort-bend.md). **364** reports, median depth **195 ft**.

### What you will drill through in grid 66-15

*Logged in state well grid 66-15, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 100 , **Sand** 54 , **Top Soil** 48 , **Red Clay** 38 , **Topsoil** 33 , **Yellow Clay** 18 |
| 25–50 ft | **Sand** 54 , **Clay** 22 , **Red Clay** 14 , **Red Sand** 14 , **Clay, Sand** 9 , **White Clay** 8 |
| 50–100 ft | **Sand** 72 , **Clay** 57 , **White Clay** 26 , **Red Clay** 16 , **Fine White Sand** 12 , **Clay & Rock** 10 |
| 100–200 ft | **Sand** 146 , **Clay** 69 , **Rock** 40 , **White Clay** 26 , **Red Clay** 14 , **Brown + White Clay** 11 |
| 200–300 ft | **Sand** 27 , **Clay** 20 , **Rock** 9 , **Sand Clay** 3 , **White Clay** 4 , **Hard Rock** 2 |
| 300–500 ft | **Clay** 4 , **Grey Clay** 2 , **Medium Sand** 1 , **Sand** 2 , **Sand & Rock** 1 , **Clay & Rock** 1 |
| 500–1000 ft | **Sand/Clay** 1 , **Clay** 2 , **Sand** 2 , **Shell & Clay** 1 , **Sand/Clay/Gravel** 1 , **Clay/Limestone** 1 |
| 1000–5000 ft | **Sand** 1 , **Clay** 1 , **Sand/Clay** 1 , **Sand/Clay/Shale** 1 , **Sand/Clay/Limestone/Gravel** 1 |

### Who drills here

*Licensed firms in state well grid 66-15, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Main Stream Environmental](/driller/main-stream-environmental.md) | 21 | 200 | 35 | 2021–2023 |
| [Ricky Bonds Water Wells](/driller/ricky-bonds-water-wells.md) | 18 | 225 | 60 | 2009–2025 |
| [Skutca Water Well](/driller/skutca-water-well.md) | 18 | 157 | 40 | 2003–2012 |
| [Neuendorff's Water Well Service, Inc.](/driller/neuendorff-s-water-well-service-inc.md) | 17 | 190 | 60 | 2015–2026 |
| [HEFLIN WATER WORKS](/driller/heflin-water-works.md) | 16 | 180 | 50 | 2003–2023 |
| [Texas Southern Drilling](/driller/texas-southern-drilling.md) | 15 | 225 | 30 | 2020–2026 |
| MESECKE WATER WELL ENTERPRISES, INC. | 14 | 210 | — | 2020–2021 |
| [Leon Flentge Water Well Drilling](/driller/leon-flentge-water-well-drilling.md) | 13 | 234 | 75 | 2014–2020 |
| [A.W. Flentge Service](/driller/a-w-flentge-service.md) | 13 | 160 | 50 | 2002–2010 |
| [TIM FRANKS WATER WELL SERVICE](/driller/tim-franks-water-well-service.md) | 12 | 185 | 40 | 2023–2025 |
| [Leon Flentge Water Well Drilling and Service](/driller/leon-flentge-water-well-drilling-and-service.md) | 11 | 210 | 80 | 2006–2012 |
| [Terra Power Drilling LLC](/driller/terra-power-drilling-llc.md) | 10 | 170 | 50 | 2009–2018 |
| [Geophysical Drilling, Inc.](/driller/geophysical-drilling-inc.md) | 9 | 212 | 40 | 2006–2022 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 9 | 12 | — | 2005–2020 |
| [ONE STOP SEPTICS & WATER WELLS](/driller/one-stop-septics-water-wells.md) | 8 | 205 | 50 | 2025–2026 |
| [AQUA STAR LLC](/driller/aqua-star-llc.md) | 8 | 185 | 70 | 2014–2026 |
| [Cobra Water Well Drilling, LLC.](/driller/cobra-water-well-drilling-llc.md) | 8 | 200 | 40 | 2011–2020 |
| [Strata Core Services, LLC](/driller/strata-core-services-llc.md) | 8 | 60 | — | 2015–2017 |
| [Austin County Water Well Service](/driller/austin-county-water-well-service.md) | 8 | 210 | 60 | 2005–2009 |
| [Flentge Water Well Drilling and Service](/driller/flentge-water-well-drilling-and-service.md) | 8 | 194 | 80 | 2004–2006 |
| [WASHINGTON CO WATER WELL DRILLING](/driller/washington-co-water-well-drilling.md) | 7 | 190 | 50 | 2018–2024 |
| [Austin County Water Well](/driller/austin-county-water-well.md) | 7 | 180 | 40 | 2003–2006 |
| [J&S WATER WELLS](/driller/j-s-water-wells.md) | 6 | 490 | 150 | 2007–2020 |
| [Scott Drilling Inc.](/driller/scott-drilling-inc.md) | 6 | 215 | 70 | 2003–2019 |
| [Mathers Environmental Drilling Inc.](/driller/mathers-environmental-drilling-inc.md) | 6 | — | — | 2015 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 267 | 73.4% | 200 |
| Monitor | 37 | 10.2% | 50 |
| Irrigation | 18 | 4.9% | 370 |
| Stock | 14 | 3.8% | 200 |
| Environmental Soil Boring | 9 | 2.5% | 12 |
| Public Supply | 7 | 1.9% | 220 |
| Test Well | 4 | 1.1% | 60 |
| Industrial | 4 | 1.1% | 210 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 114 | 180 | 60 |
| 2010s | 109 | 191 | 65 |
| 2020s | 141 | 200 | 78 |

### The deepest reports on file

*Deepest reports in state well grid 66-15. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 626474 | 2022 | 1,400 | 114 | 1,022 | Public Supply |
| 679464 | 2024 | 1,385 | 111 | 1,022 | Public Supply |
| 552969 | 2020 | 620 | 132 | 1,200 | Irrigation |
| 668767 | 2024 | 520 | 51 | 800 | Irrigation |
| 553671 | 2020 | 500 | 130 | 200 | Industrial |
| 523170 | 2019 | 500 | 118 | 1,200 | Irrigation |
| 267883 | 2011 | 490 | 125 | 150 | Irrigation |
| 467310 | 2017 | 480 | 100 | 100 | Irrigation |
| 518804 | 2019 | 460 | 115 | 1,000 | Irrigation |
| 554390 | 2020 | 370 | 120 | 1,200 | Irrigation |

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 66-15?

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), [Fort Bend County](/county/fort-bend.md).

### Grids with a comparable number of reports

- [88-49](/area/88-49.md)
- [06-04](/area/06-04.md)
- [58-18](/area/58-18.md)
- [34-50](/area/34-50.md)
- [59-44](/area/59-44.md)
- [59-52](/area/59-52.md)
- [83-15](/area/83-15.md)
- [68-03](/area/68-03.md)
- [87-47](/area/87-47.md)
- [35-62](/area/35-62.md)
- [66-25](/area/66-25.md)
- [67-40](/area/67-40.md)
- [68-10](/area/68-10.md)

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Página: https://texas-water-wells.pages.dev/area/66-15/
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