Water wells in Atascosa County, Texas
2,580 well reports on file. The median well here was taken to 340 ft and struck water at 125 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Atascosa County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Top Soil 415, Sand 255, Clay 249, Surface 167, Shale 146, Red Clay 151 |
| 25–50 ft | Sand 96, Gray Clay 57, Shale 53, Clay 34, Tan Clay 32, Rock 27 |
| 50–100 ft | Sand 175, Shale 147, Rock 105, Gray Clay 70, Grey Shale 38, Clay 32 |
| 100–200 ft | Sand 400, Shale 232, Rock 200, Gray Clay 91, Grey Shale 73, Sandy Shale 64 |
| 200–300 ft | Sand 376, Shale 237, Rock 161, Gray Clay 73, Sandy Shale 59, Clay 57 |
| 300–500 ft | Sand 398, Shale 261, Rock 115, Sandy Shale 82, Gray Clay 61, Clay 55 |
| 500–1000 ft | Sand 153, Shale 106, Sandy Shale 43, Rock 32, Clay 16, Gray Clay 14 |
| 1000–5000 ft | Shale 76, Sand 69, Carrizo Sand 46, Sandy Shale 27, Gray Shale 15, Sand (Carrizo) 11 |
The rock column here is what drillers wrote down, layer by layer, in their own words — 5,345,462 layers across 707,856 wells. It is not a geological survey: two drillers may call the same clay by two names, and this site does not correct them.
Who drills in Atascosa County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 1,024 | 39.7% | 385 |
| Environmental Soil Boring | 454 | 17.6% | 15 |
| Monitor | 406 | 15.7% | 40 |
| Stock | 272 | 10.5% | 385 |
| Irrigation | 220 | 8.5% | 700 |
| Industrial | 54 | 2.1% | 490 |
| Rig Supply | 50 | 1.9% | 2,408 |
| Fracking Supply | 47 | 1.8% | 3,210 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 541 | 260 | 119 |
| 2010s | 1,154 | 360 | 113 |
| 2020s | 885 | 360 | 152 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 386225 | 2014 | 4,915 | 191 | 1,000 | Fracking Supply |
| 292789 | 2011 | 4,911 | 67 | 300 | Rig Supply |
| 386230 | 2014 | 4,850 | 268 | 1,000 | Fracking Supply |
| 632883 | 2023 | 4,847 | 147 | 875 | Fracking Supply |
| 522846 | 2019 | 4,769 | 80 | 800 | Rig Supply |
| 227189 | 2010 | 4,622 | 20 | — | Rig Supply |
| 311359 | 2013 | 4,600 | 25 | — | Fracking Supply |
| 457844 | 2017 | 4,400 | 201 | 648 | Public Supply |
| 314007 | 2013 | 4,272 | 105 | — | Industrial |
| 387266 | 2014 | 4,225 | 52 | 1,720 | Fracking Supply |
Every figure on this site is a median, never an average. On reported yield the average is twice the median, because a handful of entries are typing errors — the largest reads 2,200,100 gallons per minute against 30,078 for the next one. Yields above 3,000 gpm (136 wells, 0.045%) and depths beyond 5,000 ft (103 wells, 0.016%) are kept in the file, marked, and left out of the medians.
Drilling a well in Atascosa County?
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.
Counties with a comparable number of reports
A sliding window, not a ranking. Every county.