Texas well grid 78-15
A 7.5-minute quadrangle of the Texas state well grid, mostly in Atascosa County and Karnes County. 121 reports, median depth 80 ft.
121Reports
80 ftMedian depth
100 ftWater at
60 gpmMedian yield
What you will drill through in grid 78-15
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 13, Silty Clay 6, Top Soil 9, Shale 7, Tan Clay 9, Silty, Clayey, Sand 9 |
| 25–50 ft | Sand 6, Poorly Graded Sand 4, Shale 4, Clay 3, Gray Clay 3, Rock 1 |
| 50–100 ft | Rock 4, Sand 5, Shale 4, Gray Clay 4, Lignite And Blue Clay 2, Gravel 1 |
| 100–200 ft | Shale 11, Sand 10, Rock 7, Sand And Shale 3, Clay 4, Shale Streaks Sand 2 |
| 200–300 ft | Sand 10, Shale 9, Rock 5, Gray Clay 5, Clay 3, Sand Streaks Shale 3 |
| 300–500 ft | Sand 12, Shale 5, Clay 5, Rock 3, Shale & Sand 2, Sand / Td 2 |
| 500–1000 ft | Sand 5, Shale 4, Gray Clay 2, Sand Streaks Shale 2, Silty Gray Sand 1, Sandy Shale Mix 2 |
| 1000–5000 ft | Sand 4, Shale 2, Carrizo Sand 1, Shale/Limestone 1, Sand/Shale 1, Sandy Shale Mix 1 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Vortex Drilling, Inc. | 32 | 20 | — | 2007–2016 |
| Geoprojects International, Inc. | 22 | 50 | — | 2004–2011 |
| Thomas Moy and Sons Water Well Drilling Inc. | 10 | 480 | 50 | 2019–2026 |
| M&C WATERWELL DRILLING | 7 | 355 | 60 | 2009–2016 |
| WEST Drilling | 4 | 15 | — | 2019 |
| Evans Drilling | 4 | 640 | 250 | 2010–2011 |
| Bull's Eye Services, LLC | 3 | 563 | 875 | 2013–2023 |
| Thomas Moy and Sons | 3 | 360 | 45 | 2016–2022 |
| Vortex Drilling Partners, LP | 3 | 22 | — | 2019 |
| Water Well Services, Inc. | 3 | 3,800 | 1,200 | 2013–2014 |
| EDWARD PAWLIK & SON W S | 3 | 585 | 150 | 2014 |
| Unison Drilling Inc | 3 | 663 | 150 | 2011–2012 |
| Pinnergy, LTD | 3 | 380 | 50 | 2011–2012 |
| Moy's Water Well Drilling & Services of Texas | 2 | 1,000 | 60 | 2019–2021 |
| Gainco, Inc. | 2 | 74 | — | 2016–2019 |
| McKinley Drilling | 2 | 651 | 50 | 2013 |
| Friedel Drilling Company | 2 | — | 60 | 2012 |
| Mathers Environmental Drilling Inc. | 2 | 75 | — | 2012 |
| BULLS EYE SERVICES LLC | 1 | 600 | 30 | 2024 |
| Talon/LPE | 1 | 30 | — | 2020 |
| Roddy Qualls Environmental Drilling | 1 | 70 | — | 2019 |
| Weisinger Incorporated | 1 | 4,400 | 648 | 2017 |
| B&K Water Well Drilling | 1 | 520 | 20 | 2016 |
| Thomas Moy & Sons | 1 | 400 | 4 | 2003 |
| Lanceco Drilling Services | 1 | — | — | 2010 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 36 | 29.8% | 58 |
| Environmental Soil Boring | 31 | 25.6% | 20 |
| Domestic | 18 | 14.9% | 480 |
| Rig Supply | 14 | 11.6% | 640 |
| Stock | 12 | 9.9% | 360 |
| Industrial | 5 | 4.1% | 715 |
| Fracking Supply | 2 | 1.7% | 4,847 |
| Unknown | 1 | 0.8% | 440 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 32 | 58 | 84 |
| 2010s | 74 | 74 | 100 |
| 2020s | 15 | 440 | 151 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 632883 | 2023 | 4,847 | 147 | 875 | Fracking Supply |
| 457844 | 2017 | 4,400 | 201 | 648 | Public Supply |
| 387137 | 2014 | 3,800 | 44 | 1,200 | Fracking Supply |
| 225266 | 2010 | 3,525 | 162 | 250 | Rig Supply |
| 510003 | 2019 | 1,000 | 260 | 60 | Industrial |
| 599760 | 2022 | 840 | 213 | 8 | Domestic |
| 164562 | 2004 | 820 | 145 | 60 | Domestic |
| 321428 | 2013 | 715 | 154 | — | Industrial |
| 260657 | 2011 | 663 | 80 | 150 | Rig Supply |
| 354087 | 2013 | 651 | 72 | 50 | Industrial |
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 78-15?
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.
This grid falls in Atascosa County, Karnes County.