Texas well grid 67-21
A 7.5-minute quadrangle of the Texas state well grid, mostly in Gonzales County and Caldwell County. 165 reports, median depth 340 ft.
165Reports
340 ftMedian depth
60 ftWater at
80 gpmMedian yield
What you will drill through in grid 67-21
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Red Clay 39, Top Soil 33, Sand 30, Tan Clay 23, Clay 22, Red Sandy Clay 19 |
| 25–50 ft | Gray Clay 18, Gray Shale 7, Sand 6, Gray Sandy Shale 5, Sandy Clay 4, Clay 4 |
| 50–100 ft | Gray Clay 18, Sand 15, Clay 14, Gray Shale 10, Rock 10, Gray Sand 8 |
| 100–200 ft | Sand 27, Rock 18, Clay 22, Gray Clay 24, Gray Sand 10, Gray Shale 9 |
| 200–300 ft | Sand 39, Clay 23, Gray Clay 24, Rock 10, Gray Sand 10, Sandy Clay 7 |
| 300–500 ft | Sand 25, Clay 16, Gray Clay 22, Rock 10, Gray Sand 8, Gray Shale 4 |
| 500–1000 ft | Gray Clay 4, Med Sand 5, Gray Sand And Layered Rock 5, Course Sand 4, Clay 2, Sand 3 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Maresh Drilling Co., Inc. | 21 | 420 | 90 | 2001–2022 |
| Drillink, Inc. | 19 | 535 | 100 | 2018–2026 |
| Friedel Drilling Company | 16 | 300 | 60 | 2002–2026 |
| Lone Star Drlg & Pump Serv | 12 | 395 | 50 | 2014–2021 |
| WB Southern Drilling LLC | 11 | 405 | 100 | 2024–2026 |
| Lone Star Drilling & Pump Service | 11 | 315 | 50 | 2006–2012 |
| Deharde Water Well Service | 9 | 396 | 130 | 2004–2026 |
| Motal Well Service | 9 | 320 | 40 | 2003–2016 |
| Hazelett Drilling | 8 | 280 | 50 | 2015–2026 |
| Royall's Windmill and Pump | 7 | 428 | 24 | 2002–2015 |
| Roger Miller | 6 | 25 | — | 2004–2005 |
| Texas Southern Drilling | 5 | 325 | 15 | 2022–2025 |
| BEST DRILLING SERVICES, INC. | 5 | 25 | — | 2007 |
| Richter Well Drilling, Inc. | 4 | 460 | 100 | 2003–2013 |
| Alpine Field Services | 4 | 25 | — | 2003–2004 |
| Royall's Windmill & Pump | 3 | 420 | 25 | 2007–2016 |
| Brown's Water Well | 3 | 350 | — | 2007–2008 |
| Lone Star Drilling & Pump Serv. | 2 | 413 | 30 | 2006–2011 |
| ROYALLS WINDMILL & PUMP, LLC | 2 | 228 | 80 | 2003–2006 |
| Brown Water Well | 1 | 600 | 80 | 2025 |
| sotex water well service | 1 | 300 | 10 | 2025 |
| Bell's Drilling Service | 1 | 270 | 25 | 2023 |
| Wagener's Well Service | 1 | 360 | 100 | 2019 |
| Wagener's Water Well Service | 1 | 560 | 80 | 2019 |
| Cobra Water Well Drilling, LLC. | 1 | 340 | 70 | 2015 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 104 | 63.0% | 340 |
| Stock | 43 | 26.1% | 425 |
| Monitor | 15 | 9.1% | 25 |
| Irrigation | 2 | 1.2% | 900 |
| Rig Supply | 1 | 0.6% | 300 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 49 | 312 | 52 |
| 2010s | 65 | 367 | 56 |
| 2020s | 51 | 360 | 97 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 643075 | 2023 | 900 | 65 | — | Stock |
| 643074 | 2023 | 900 | 65 | — | Stock |
| 643073 | 2023 | 900 | 64 | — | Stock |
| 536479 | 2019 | 900 | 40 | 250 | Irrigation |
| 714910 | 2026 | 880 | 80 | 100 | Stock |
| 714899 | 2025 | 880 | 80 | 100 | Stock |
| 708933 | 2025 | 860 | 109 | 100 | Stock |
| 708931 | 2025 | 800 | 103 | 100 | Stock |
| 334120 | 2013 | 760 | 97 | 90 | Domestic |
| 493477 | 2018 | 710 | 59 | 100 | Stock |
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 67-21?
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.
This grid falls in Gonzales County, Caldwell County, Goliad County.