Water wells in San Patricio County, Texas
3,134 well reports on file. The median well here was taken to 51 ft and struck water at 30 ft — against 180 ft and 80 ft across Texas.
What you will drill through in San Patricio County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 651, Sand 552, Top Soil 257, Topsoil 204, Red Clay 182, No Recovery 101 |
| 25–50 ft | Clay 322, Sand 219, Sand/Sea Shell 43, Red Coarse Sand 41, Fine Sand 30, Caliche 37 |
| 50–100 ft | Clay 440, Sand 340, Red Clay 166, Red Coarse Sand 61, Sand & Clay 49, Caliche 45 |
| 100–200 ft | Sand 458, Clay 349, Red Clay 142, Red Coarse Sand 99, Red Sand 95, Sand And Clay 69 |
| 200–300 ft | Sand 196, Clay 101, Red Clay 38, Sand & Clay 29, Red Coarse Sand 25, Sand And Clay 16 |
| 300–500 ft | Sand 36, Clay 25, Blue Clay 8, Sand & Clay 7, Shale 2, Sandstone & Clay 4 |
| 500–1000 ft | Sand 3, Shale 2, Clay 4, Clay, Gray, Silty Firm 1, Sand, Gray, Med-Fine Calc 1, Clay, Gray, Silty, Firm 1 |
| 1000–5000 ft | Sand 2, Shale 1 |
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 San Patricio County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 1,123 | 35.8% | 23 |
| Domestic | 921 | 29.4% | 185 |
| Environmental Soil Boring | 583 | 18.6% | 15 |
| Irrigation | 199 | 6.3% | 139 |
| Rig Supply | 73 | 2.3% | 260 |
| De-watering | 66 | 2.1% | 100 |
| Industrial | 61 | 1.9% | 255 |
| Stock | 54 | 1.7% | 195 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 1,049 | 90 | 32 |
| 2010s | 1,483 | 30 | 27 |
| 2020s | 602 | 45 | 29 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 504006 | 2018 | 2,258 | 90 | 40 | Domestic |
| 559460 | 2020 | 2,220 | 46 | 50 | Domestic |
| 508865 | 2019 | 1,130 | 23 | — | Industrial |
| 662306 | 2024 | 1,000 | 31 | — | Test Well |
| 543158 | 2020 | 760 | 28 | — | Industrial |
| 654240 | 2023 | 750 | 33 | 90 | Monitor |
| 725270 | 2026 | 700 | 69 | 700 | Public Supply |
| 141281 | 2008 | 685 | 88 | 50 | Public Supply |
| 607550 | 2019 | 650 | 30 | 30 | Monitor |
| 727998 | 2026 | 600 | — | — | Public 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 San Patricio 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.