Texas well grid 78-04
A 7.5-minute quadrangle of the Texas state well grid, mostly in Atascosa County and Wilson County. 202 reports, median depth 420 ft.
202Reports
420 ftMedian depth
134 ftWater at
50 gpmMedian yield
What you will drill through in grid 78-04
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Top Soil 41, Clay 24, Red Clay 19, Surface 18, Sand 12, Tan Clay 13 |
| 25–50 ft | Sand With Rock Strks 6, Shale 6, Clay With Sand/Rock Strks 5, Gray Clay 5, Clay 4, Clay With Rock Strks 4 |
| 50–100 ft | Shale 14, Sand 14, Rock 7, Grey Clay/Shale With Rock Strks 10, Sand With Rock Strks 8, Grey Clay/Shale 7 |
| 100–200 ft | Sand 41, Rock 24, Shale 24, Grey Clay/Shale 15, Sand With Rock Strks 17, Grey Clay/Shale With Rock Strks 13 |
| 200–300 ft | Sand 49, Shale 31, Rock 12, Grey Clay/Shale 12, Sand With Rock Strks 13, Gray Clay/Shale 7 |
| 300–500 ft | Sand 59, Shale 32, Rock 15, Clay/Shale 13, Sandy Shale 10, Gray Sand 9 |
| 500–1000 ft | Sand 13, Shale 10, Rock 9, Sandy Shale 7, Sandy 2, Clay 4 |
| 1000–5000 ft | Sand 6, Sand, Shale 1, Shale 4, Sandy Shale 4, Carrizo Sand 3, Sand/Lignite 1 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Busselman Water Wells, LLC | 28 | 317 | 16 | 2025 |
| Vortex Drilling, Inc. | 26 | 20 | — | 2007–2016 |
| Thomas Moy and Sons | 16 | 500 | 60 | 2004–2019 |
| Moy's Water Well Drilling & Services of Texas | 12 | 445 | 80 | 2018–2024 |
| B&K Water Well Drilling | 12 | 360 | 35 | 2012–2023 |
| Water Well Services, Inc. | 9 | 450 | 80 | 2008–2018 |
| M & C WATERWELL DRILLING | 9 | 365 | 75 | 2005–2014 |
| Thomas Moy and Sons Water Well Drilling Inc. | 8 | 580 | 60 | 2014–2026 |
| DRT Services, LLC | 8 | 500 | 60 | 2012–2025 |
| Thomas Moy and Son's | 7 | 520 | 60 | 2004–2018 |
| Thomas Moy & Sons | 6 | 520 | 60 | 2005–2008 |
| Texas Southern Drilling | 5 | 350 | 45 | 2021–2022 |
| J B Drilling | 5 | 407 | 55 | 2009–2013 |
| STEVENS DRILLING & WATER WELL SERVICE | 4 | 550 | 75 | 2017–2025 |
| Edward Pawlik & Son Well Service | 4 | 530 | 100 | 2005–2007 |
| McKinley Drilling | 3 | 1,565 | 1,000 | 2025–2026 |
| BEST DRILLING SERVICES, INC. | 3 | 32 | — | 2016 |
| EDWARD PAWLIK & SON W S | 3 | 465 | 100 | 2011–2012 |
| R&K Water Well Drilling | 2 | 640 | 60 | 2025 |
| Alamo Water Wells | 2 | 1,600 | 200 | 2024 |
| Moy's Water Well Services | 2 | 435 | 45 | 2019–2023 |
| Underground Water Resources, LLC | 2 | 520 | 20 | 2022–2023 |
| Wel-Mat Drilling LLP | 2 | 35 | — | 2017 |
| Thomas Moy & Sons Water Well Drilling | 2 | 480 | 60 | 2007 |
| HERBOLD BROTHERS | 2 | 200 | 20 | 2006 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 125 | 61.9% | 435 |
| Stock | 24 | 11.9% | 420 |
| Monitor | 19 | 9.4% | 25 |
| Irrigation | 13 | 6.4% | 690 |
| Environmental Soil Boring | 12 | 5.9% | 20 |
| Public Supply | 5 | 2.5% | 2,020 |
| Industrial | 3 | 1.5% | 571 |
| Rig Supply | 1 | 0.5% | 600 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 47 | 375 | 104 |
| 2010s | 81 | 440 | 116 |
| 2020s | 74 | 364 | 155 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 123355 | 2007 | 2,050 | 140 | 1,158 | Public Supply |
| 709840 | 2025 | 2,020 | — | — | Public Supply |
| 462695 | 2017 | 2,018 | 185 | — | Irrigation |
| 671037 | 2024 | 1,920 | 167 | 1,808 | Public Supply |
| 359709 | 2013 | 1,700 | 165 | 1,500 | Public Supply |
| 714365 | 2025 | 1,630 | 325 | 1,000 | Irrigation |
| 678607 | 2024 | 1,600 | 100 | 200 | Irrigation |
| 727258 | 2026 | 1,565 | 249 | 1,000 | Irrigation |
| 714366 | 2025 | 1,475 | 122 | 500 | Irrigation |
| 136467 | 2008 | 1,414 | 124 | 1,000 | Irrigation |
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 78-04?
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, Wilson County.