Water wells in Tom Green County, Texas
5,717 well reports on file. The median well here was taken to 115 ft and struck water at 50 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Tom Green County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Topsoil 1,402, Red Clay 1,159, Dirt 992, Caliche 941, Top Soil 846, White Lime 653 |
| 25–50 ft | Conglomerate 347, White Lime 320, Red Clay 298, Yellow Lime 230, Gravel 101, Blue Lime 103 |
| 50–100 ft | Red Clay 550, Blue Lime 329, Conglomerate 311, Yellow Lime 292, Blue Shale 285, White Lime 183 |
| 100–200 ft | Red Clay 422, Blue Lime 249, Gray Lime 196, Blue Shale 204, Gray Shale 179, Yellow Lime 131 |
| 200–300 ft | Blue Lime 30, Gray Lime 28, Red Clay 31, Red Shale 18, Blue Shale 18, Yellow Lime 17 |
| 300–500 ft | Red Clay 8, Red Shale 7, Gray Lime 5, Blue Lime 5, Brown Lime 4, Yellow Lime 4 |
| 500–1000 ft | Red Clay 2, Red Bed/ Grey Shale/ White Clay 1, Grey Shale/ Red Bed 1, Grey & Red Shale/ Red Bed/ White Clay 1, Red Bed/ Sandstone/ Grey Shale 1, Red Clay/ Red Shale 1 |
| 1000–5000 ft | Red Bed/ Sandstone/ Green Shale/ Sand 1, Red Shale/ Sandstone 1, Red Shale/ Red Bed/ Sandstone / Red Bed 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 Tom Green County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 1,752 | 30.6% | 110 |
| Test Well | 1,100 | 19.2% | 130 |
| Irrigation | 999 | 17.5% | 150 |
| Stock | 703 | 12.3% | 140 |
| Monitor | 668 | 11.7% | 35 |
| Environmental Soil Boring | 412 | 7.2% | 10 |
| Public Supply | 21 | 0.4% | 105 |
| Industrial | 20 | 0.3% | 180 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 1,808 | 100 | 50 |
| 2010s | 2,152 | 105 | 50 |
| 2020s | 1,757 | 125 | 50 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 518812 | 2019 | 1,585 | 40 | 300 | Irrigation |
| 456373 | 2017 | 1,500 | — | — | Rig Supply |
| 456372 | 2017 | 812 | — | — | Rig Supply |
| 136287 | 2008 | 620 | — | 60 | Rig Supply |
| 171806 | 2009 | 555 | 390 | 12 | Domestic |
| 194096 | 2007 | 530 | 250 | 3 | Test Well |
| 194097 | 2007 | 490 | 340 | 1 | Test Well |
| 87052 | 2006 | 480 | 450 | 10 | Stock |
| 251524 | 2011 | 460 | 100 | 75 | Irrigation |
| 343231 | 2013 | 440 | 340 | 1 | 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 Tom Green 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.