Water wells in Bastrop County, Texas
2,740 well reports on file. The median well here was taken to 320 ft and struck water at 90 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Bastrop County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Red Clay 541, Sand 431, Top Soil 437, Clay 306, Tan Clay 217, Gravel 196 |
| 25–50 ft | Gray Clay 218, Sand 162, Rock 108, Gray Shale 94, Grey Clay 90, Clay 87 |
| 50–100 ft | Rock 346, Sand 298, Gray Clay 216, Clay 140, Gray Shale 129, Sandy Shale 94 |
| 100–200 ft | Rock 612, Sand 677, Clay 290, Gray Clay 222, Sandy Shale 184, Gray Shale 163 |
| 200–300 ft | Rock 486, Sand 546, Clay 251, Gray Clay 151, Shale 157, Sandy Shale 151 |
| 300–500 ft | Sand 492, Rock 395, Clay 228, Shale 184, Sandy Shale 180, Gray Clay 111 |
| 500–1000 ft | Sand 128, Rock 93, Shale 69, Clay 73, Sandy Shale 49, Gray Shale 34 |
| 1000–5000 ft | Sand 12, Shale 9, Clay 3, Gray Sand 6, Sand & Clay Mix 2, Lignite 3 |
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 Bastrop County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 1,911 | 69.7% | 340 |
| Irrigation | 266 | 9.7% | 340 |
| Monitor | 165 | 6.0% | 40 |
| Stock | 146 | 5.3% | 360 |
| Environmental Soil Boring | 125 | 4.6% | 6 |
| Industrial | 43 | 1.6% | 324 |
| Public Supply | 35 | 1.3% | 713 |
| Test Well | 30 | 1.1% | 300 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 784 | 300 | 78 |
| 2010s | 1,155 | 320 | 90 |
| 2020s | 801 | 320 | 107 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 333822 | 2007 | 3,710 | 210 | 95 | Rig Supply |
| 514612 | 2019 | 1,587 | 237 | 2,227 | Irrigation |
| 509694 | 2019 | 1,587 | 237 | 2,227 | Irrigation |
| 400430 | 2015 | 1,570 | 287 | 1,350 | Public Supply |
| 67690 | 2003 | 1,506 | 278 | 60 | Test Well |
| 35389 | 2003 | 1,502 | — | 1,000 | Public Supply |
| 242996 | 2010 | 1,400 | 335 | 260 | Test Well |
| 377769 | 2014 | 1,393 | 201 | — | Industrial |
| 361547 | 2014 | 1,373 | 175 | 2,000 | Industrial |
| 361605 | 2013 | 1,348 | 160 | 3,000 | Industrial |
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 Bastrop 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.