Water wells in Brazos County, Texas
2,174 well reports on file. The median well here was taken to 228 ft and struck water at 70 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Brazos County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 535, Sand 206, Topsoil 176, Shale 169, Sandy Clay 126, Top Soil 111 |
| 25–50 ft | Shale 133, Sand 92, Clay 69, Gravel 48, Sandy Shale 47, Sandy Clay 25 |
| 50–100 ft | Shale 228, Sand 147, Clay 117, Sandy Shale 96, Rock 32, Gravel 30 |
| 100–200 ft | Shale 278, Sand 265, Clay 157, Sandy Shale 165, Rock 44, Streaky Sand 48 |
| 200–300 ft | Sand 288, Shale 272, Sandy Shale 159, Clay 143, Streaky Sand 58, Rock 45 |
| 300–500 ft | Shale 289, Sand 334, Sandy Shale 136, Clay 110, Streaky Sand 54, Rock 45 |
| 500–1000 ft | Shale 110, Sand 110, Clay 52, Sandy Shale 40, Streaky Sand 26, Rock 7 |
| 1000–5000 ft | Sand 10, Clay 7, Shale 6, Sand/Lignite 1, Clay,Sand 1, Clay/Lignite 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 Brazos County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 700 | 32.2% | 360 |
| Monitor | 510 | 23.5% | 30 |
| Environmental Soil Boring | 301 | 13.8% | 15 |
| Rig Supply | 192 | 8.8% | 440 |
| Irrigation | 129 | 5.9% | 74 |
| Industrial | 125 | 5.7% | 410 |
| Stock | 71 | 3.3% | 380 |
| Fracking Supply | 56 | 2.6% | 480 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 559 | 308 | 60 |
| 2010s | 1,040 | 260 | 75 |
| 2020s | 575 | 35 | 72 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 716428 | 2025 | 3,100 | 280 | 127 | Monitor |
| 573014 | 2021 | 3,057 | 249 | 2,000 | Public Supply |
| 172420 | 2009 | 3,000 | 199 | — | Public Supply |
| 71146 | 2005 | 2,900 | 221 | — | Public Supply |
| 342901 | 2013 | 2,609 | 78 | 65 | Rig Supply |
| 175925 | 2004 | 1,736 | 121 | 900 | Irrigation |
| 400455 | 2015 | 1,574 | 82 | 230 | Test Well |
| 66845 | 2003 | 1,546 | 207 | 934 | Irrigation |
| 332699 | 2013 | 1,500 | — | — | Monitor |
| 148724 | 2008 | 1,480 | — | — | Test Well |
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 Brazos 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.