Texas well grid 77-50
A 7.5-minute quadrangle of the Texas state well grid, mostly in Webb County and Dimmit County. 137 reports, median depth 20 ft.
137Reports
20 ftMedian depth
280 ftWater at
350 gpmMedian yield
What you will drill through in grid 77-50
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Sand. 20, Sand 11, Silty Clay: Brown, Medium Stiff, Medium Plasticity, Dry, No 9, 90% Clay & 10% Silty Sands (Cl) Same As Above 5, 90% Clay & 10% Silty Sands (Cl) 2.5 Y 5/3, Light Olive Brown 4, Sand, Clay. 4 |
| 25–50 ft | Silty Clay, Brown And Gray With Trace Yellow Silty Seam @ 32 3, -Sandstone 2, -Moist 2, 90% Clays (Cl) Same As Above 1, Silty Lay, Light Olive Brown, Very Stiff, Dry, No Hydrocarbo 2, Shale/Clay 2 |
| 50–100 ft | Grey Shale/Sand Mix 1, Shale/Clay Same As Above 1, Shale,Roock,And Sand 1, Shale Rock And Sand 1, Shale 1, Sand Shale And Rock Layers 1 |
| 100–200 ft | Sandy Shale 1 |
| 500–1000 ft | Sand 3, Sand (Big Ford) 2, Sand/Shale 2, Shale And Sand 2, Sand And Strks Of Shale 2, Sand And Few Strks Of Shale 2 |
| 1000–5000 ft | Sand 5, Carrizo Sand 5, Shale 3, Grey Shale 2, Sand (Carrizo) 2, Sandy Shale 2 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Vortex Drilling, Inc. | 91 | 20 | — | 2014–2018 |
| Talon/LPE | 20 | 23 | — | 2019–2025 |
| Alamo Environmental dba Vortex Drilling | 8 | 20 | — | 2024 |
| McKinley Drilling | 6 | 1,817 | 350 | 2010–2012 |
| Bull's Eye Services, LLC | 3 | 1,408 | 65 | 2018–2026 |
| Thomas Moy and Sons | 3 | 1,325 | — | 2010–2011 |
| Dennis Drilling Company | 2 | 1,600 | — | 2013 |
| Burleson Services, Inc. | 2 | 1,500 | 350 | 2010–2011 |
| Water Well Services, Inc. | 1 | — | — | 2012 |
| McKinley Drilllingp | 1 | 1,612 | 400 | 2010 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 102 | 74.5% | 20 |
| Monitor | 17 | 12.4% | 40 |
| Rig Supply | 14 | 10.2% | 1,600 |
| Domestic | 2 | 1.5% | 1,408 |
| Fracking Supply | 2 | 1.5% | 1,450 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2010s | 109 | 20 | 280 |
| 2020s | 28 | 21 | 527 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 299027 | 2012 | 1,850 | — | 350 | Rig Supply |
| 285890 | 2012 | 1,817 | — | — | Rig Supply |
| 230614 | 2010 | 1,804 | 195 | 300 | Rig Supply |
| 213687 | 2010 | 1,733 | — | — | Rig Supply |
| 241733 | 2010 | 1,612 | 245 | 400 | Rig Supply |
| 348418 | 2013 | 1,600 | 346 | — | Rig Supply |
| 348404 | 2013 | 1,595 | 370 | — | Rig Supply |
| 248208 | 2011 | 1,500 | — | 350 | Rig Supply |
| 482894 | 2018 | 1,450 | — | 350 | Fracking Supply |
| 730530 | 2026 | 1,408 | 278 | 65 | 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 77-50?
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 Webb County, Dimmit County.