# Well grid 83-21, Texas — Nueces, San Patricio — how deep, and through what

> 766 well reports in Texas state well grid 83-21, covering Nueces, San Patricio. Median depth 20 ft.

## Texas well grid 83-21

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Nueces County](/county/nueces.md) and [San Patricio County](/county/san-patricio.md). **766** reports, median depth **20 ft**.

### What you will drill through in grid 83-21

*Logged in state well grid 83-21, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 106 , **Asphalt** 42 , **Clay Drk Gray/Lt Gray/Brown** 29 , **Concrete Base** 28 , **Sand** 25 , **Concrete** 25 |
| 25–50 ft | **Clay** 25 , **Sand** 23 , **Broken Sand** 9 , **Sandy Clay** 6 , **Clayey Sand** 4 , **Silty Sand; Tan** 4 |
| 50–100 ft | **Sand** 60 , **Clay** 38 , **Broken Sand** 6 , **Blue Clay** 4 , **Caliche & Sand** 4 , **Caliche** 3 |
| 100–200 ft | **Sand** 80 , **Clay** 78 , **Broken Sand** 10 , **Red Clay** 8 , **Caliche** 4 , **Caliche And Sand** 4 |
| 200–300 ft | **Sand** 17 , **Clay** 14 , **Broken Sand** 7 , **Red Clay** 4 , **Sandy Caliche** 2 , **Red Sand** 2 |
| 300–500 ft | **Sand** 4 , **Shale** 1 , **Clay** 1 , **Tan Clay** 1 , **Sand With Shale** 1 , **Sady Shale** 1 |
| 500–1000 ft | **Sand And Shale** 1 , **Shale** 1 , **Clay** 1 , **Sand** 1 |

### Who drills here

*Licensed firms in state well grid 83-21, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 167 | 15 | — | 2006–2025 |
| [EnviroCore, Inc.](/driller/envirocore-inc.md) | 123 | 18 | — | 2004–2024 |
| [MARTIN WATER WELLS](/driller/martin-water-wells.md) | 82 | 205 | — | 2003–2026 |
| [ECI](/driller/eci.md) | 51 | 22 | — | 2004–2007 |
| [Gainco, Inc.](/driller/gainco-inc.md) | 42 | 20 | 2 | 2011–2022 |
| [Mathers Environmental Drilling Inc.](/driller/mathers-environmental-drilling-inc.md) | 31 | 25 | — | 2007–2019 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 30 | 20 | — | 2021–2025 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 23 | 20 | — | 2019–2022 |
| [Rock Engineering](/driller/rock-engineering.md) | 23 | 14 | — | 2011–2012 |
| [Front Range Drilling, Inc.](/driller/front-range-drilling-inc.md) | 17 | 20 | — | 2012–2016 |
| [ESN-South](/driller/esn-south.md) | 16 | 20 | — | 2004–2008 |
| [Savage Excavation](/driller/savage-excavation.md) | 15 | 20 | — | 2024–2026 |
| Jedi Drilling | 14 | 40 | — | 2009 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 12 | 20 | — | 2020–2022 |
| [Alamo1 Drilling](/driller/alamo1-drilling.md) | 11 | 30 | — | 2025–2026 |
| [Right Drill, LLC.](/driller/right-drill-llc.md) | 11 | 12 | — | 2024 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 10 | 35 | — | 2021–2025 |
| [Fugro Geosciences, Inc.](/driller/fugro-geosciences-inc.md) | 8 | 18 | — | 2005 |
| [Talon/LPE](/driller/talon-lpe.md) | 7 | 22 | — | 2022 |
| [Mikes Drilling and Pump Service](/driller/mikes-drilling-and-pump-service.md) | 7 | 206 | 50 | 2016–2021 |
| [Wel-Mat Drilling LLP](/driller/wel-mat-drilling-llp.md) | 5 | — | — | 2003–2010 |
| [dba Universal Drilling Services](/driller/dba-universal-drilling-services.md) | 5 | 25 | — | 2005 |
| [Eagle Remediation](/driller/eagle-remediation.md) | 4 | 20 | — | 2022 |
| JEDI | 4 | — | — | 2006 |
| [Jones Environmental Drilling, Inc.](/driller/jones-environmental-drilling-inc.md) | 4 | 35 | — | 2004–2006 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 361 | 47.1% | 20 |
| Environmental Soil Boring | 292 | 38.1% | 15 |
| Domestic | 71 | 9.3% | 204 |
| Test Well | 12 | 1.6% | 30 |
| Irrigation | 12 | 1.6% | 295 |
| Stock | 6 | 0.8% | 224 |
| Industrial | 6 | 0.8% | 222 |
| Injection | 3 | 0.4% | 35 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 292 | 20 | 12 |
| 2010s | 290 | 20 | 12 |
| 2020s | 184 | 20 | 15 |

### The deepest reports on file

*Deepest reports in state well grid 83-21. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 34434 | 2003 | 581 | 35 | — | Domestic |
| 470772 | 2018 | 580 | 43 | 3 | Unknown |
| 170034 | 2009 | 370 | 25 | — | Domestic |
| 724158 | 2026 | 342 | — | — | Domestic |
| 271522 | 2011 | 340 | 5 | — | Irrigation |
| 255741 | 2005 | 340 | 29 | — | Domestic |
| 402817 | 2015 | 331 | 16 | 100 | Irrigation |
| 402583 | 2015 | 331 | 16 | 100 | Irrigation |
| 685664 | 2024 | 322 | 25 | — | Domestic |
| 376730 | 2014 | 320 | 14 | — | 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 83-21?

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 [Nueces County](/county/nueces.md), [San Patricio County](/county/san-patricio.md).

### Grids with a comparable number of reports

- [27-18](/area/27-18.md)
- [32-09](/area/32-09.md)
- [83-12](/area/83-12.md)
- [27-62](/area/27-62.md)
- [79-16](/area/79-16.md)
- [19-51](/area/19-51.md)
- [65-53](/area/65-53.md)
- [20-04](/area/20-04.md)
- [68-19](/area/68-19.md)
- [37-43](/area/37-43.md)
- [18-57](/area/18-57.md)
- [18-50](/area/18-50.md)
- [57-42](/area/57-42.md)

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Página: https://texas-water-wells.pages.dev/area/83-21/
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