Water wells in Willacy County, Texas
255 well reports on file. The median well here was taken to 20 ft and struck water at 20 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Willacy County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Concrete 32, Top Soil 26, Clay 22, Sand 13, Asphalt 13, Black Silt 13 |
| 25–50 ft | Clay 5, Coarse Sand 4, Sand 2, Fine Sand 2, Clay; Olive Yellow/Yellowish Brown, Hard. 1, Clay; Olive Yellow, Soft. 1 |
| 50–100 ft | Sand 7, Clay 6, Broken Sand 3, Shale 2, Clay & Sand 1, Sand With Shale 1 |
| 100–200 ft | Clay 15, Sand 9, Shale 3, Sandy Shale 3, Sand/Clay 1, Brown And Grey Clay 1 |
| 200–300 ft | Sand 14, Clay 8, Shale 2, Brown Clay 2, Red Clay 2, Sandy Clay 2 |
| 300–500 ft | Sand 21, Clay 12, Shale 5, Sandy Shale 4, Caliche 3, Sand & Rock 2 |
| 500–1000 ft | Sand 25, Clay 16, Shale 10, Sandy Shale 6, Brown Sand 4, Clay With Sand 3 |
| 1000–5000 ft | Sand 2, Sands And Grey Clay 1, Clay 1, Shale & Rock 1, Shaley Sand 1, Brown 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 Willacy County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 99 | 38.8% | 20 |
| Environmental Soil Boring | 91 | 35.7% | 15 |
| Stock | 19 | 7.5% | 840 |
| Domestic | 18 | 7.1% | 800 |
| Rig Supply | 9 | 3.5% | 790 |
| Irrigation | 8 | 3.1% | 47 |
| Test Well | 6 | 2.4% | 10 |
| Public Supply | 4 | 1.6% | 1,200 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 68 | 54 | 25 |
| 2010s | 136 | 20 | 20 |
| 2020s | 51 | 20 | 10 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 491671 | 2018 | 1,420 | 20 | 200 | Stock |
| 712805 | 2024 | 1,220 | — | — | Public Supply |
| 429379 | 2016 | 1,200 | 50 | 700 | Public Supply |
| 425397 | 2016 | 1,200 | 29 | — | Public Supply |
| 317493 | 2013 | 1,095 | 30 | — | Irrigation |
| 174280 | 2004 | 1,054 | 15 | 900 | Public Supply |
| 487498 | 2018 | 1,022 | 33 | 70 | Domestic |
| 372653 | 2014 | 1,010 | 75 | — | Irrigation |
| 194364 | 2009 | 990 | 30 | 40 | Stock |
| 652271 | 2023 | 970 | 61 | — | Stock |
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 Willacy 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.