Texas well grid 77-43
A 7.5-minute quadrangle of the Texas state well grid, mostly in Dimmit County. 133 reports, median depth 30 ft.
133Reports
30 ftMedian depth
275 ftWater at
350 gpmMedian yield
What you will drill through in grid 77-43
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Ch 19, Topsoil 23, Sandy Ch 17, Silt 15, Tan Sandy Clay Dry 5, Clay/Shale 11 |
| 25–50 ft | Siltstone 10, Shale; Gray 4, Clay; Gray 3, Lignite; Black 1, Clay; Tan/White 1, Clay Gray 2 |
| 50–100 ft | Clay; Tan 3, Sandstone; Light Gray 3, Shale 2, Sand; Tan 2, Clay; Tan/White 2, Lignite; Black 2 |
| 100–200 ft | Sand/Shale 3, Shale 2, Grey Shale 1, Grey Shale/Clay 1, Sand/Weak Sandstone Gray 1, Lignite; Black 1 |
| 200–300 ft | Sand 4, Sand/Shale 4, Shale 3, Shale & Sand Brown 1, Grey Shale W/ Clay 1, Shale/Sand 1 |
| 300–500 ft | Sand 10, Shale 4, Sand/Shale 3, Shale & Sand Brown 1, Shale & Sand W Layer Of Red Shale 1, Grey Shale 1 |
| 500–1000 ft | Shale 19, Sand 10, Sand/Shale 7, Grey Shale W/ Sandstone 2, Sand And Shale 2, Sand / Shale 2 |
| 1000–5000 ft | Sand (Carrizo) 20, Shale 9, Sand 4, Carrizo Sand 3, Grey Shale 2, Sand/Shale 2 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Vortex Drilling, Inc. | 30 | 25 | — | 2008–2018 |
| Envirotech Drilling Services LLC | 26 | 24 | — | 2024 |
| Dennis Drilling Company | 26 | 1,525 | 1,000 | 2004–2014 |
| Alamo Environmental dba Vortex Drilling | 19 | 27 | — | 2024 |
| EnviroCore, Inc. | 19 | 82 | — | 2012–2018 |
| Bull's Eye Services, LLC | 4 | 1,420 | 600 | 2013–2016 |
| BULLS EYE SERVICES LLC | 1 | 1,303 | 150 | 2026 |
| DAVENPORT DRILLING AND PUMP SERVICE | 1 | 1,234 | 1,000 | 2012 |
| Thomas Moy and Sons Water Well Drilling Inc. | 1 | 1,365 | 300 | 2013 |
| Pinnergy, LTD | 1 | 1,083 | — | 2012 |
| Chaffin Water Well Service | 1 | 1,477 | 350 | 2012 |
| PRO OILFEILD SERVICES LLC | 1 | 1,220 | 250 | 2012 |
| O'Day Drilling Company, Inc. | 1 | 1,500 | — | 2012 |
| Davenport Drilling & Pump Service | 1 | 1,540 | 200 | 2006 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 68 | 51.1% | 25 |
| Rig Supply | 23 | 17.3% | 1,525 |
| Monitor | 19 | 14.3% | 85 |
| Other | 8 | 6.0% | 25 |
| Domestic | 5 | 3.8% | 1,532 |
| Industrial | 5 | 3.8% | 1,350 |
| Fracking Supply | 3 | 2.3% | 1,327 |
| Irrigation | 2 | 1.5% | 1,380 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 12 | 1,234 | 264 |
| 2010s | 75 | 100 | 275 |
| 2020s | 46 | 25 | 323 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 273966 | 2011 | 2,650 | 67 | — | Rig Supply |
| 221287 | 2010 | 1,840 | 224 | — | Rig Supply |
| 256413 | 2011 | 1,754 | 280 | — | Rig Supply |
| 256410 | 2011 | 1,749 | 280 | — | Rig Supply |
| 235985 | 2010 | 1,690 | 275 | — | Rig Supply |
| 235885 | 2010 | 1,683 | 273 | — | Rig Supply |
| 338649 | 2009 | 1,668 | 227 | — | Domestic |
| 235881 | 2010 | 1,665 | 273 | — | Rig Supply |
| 235878 | 2010 | 1,665 | 273 | — | Rig Supply |
| 231332 | 2010 | 1,652 | 231 | — | Rig Supply |
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 77-43?
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 Dimmit County.