Water wells in Kerr County, Texas
3,041 well reports on file. The median well here was taken to 460 ft and struck water at 306 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Kerr County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Caliche 455, Limestone 384, Topsoil 315, Overburden 216, Top Soil 156, Surface Rock 148 |
| 25–50 ft | Blue Shale 80, Limestone 53, Gray Lime Blue Shell 31, Grey Shale 29, Grey Limestone 24, Gray Lime 24 |
| 50–100 ft | Gray Lime 73, Limestone 60, Blue Shale 49, Blue Clay 34, White Limestone 34, Grey Limestone 27 |
| 100–200 ft | Blue Shale 143, Gray Lime 115, Limestone 84, Grey Limestone 48, Blue Clay 47, White Limestone 35 |
| 200–300 ft | Blue Shale 110, Blue Clay 91, Limestone 57, Grey Limestone 46, Gray Lime 44, Solid Limestone 40 |
| 300–500 ft | Blue Clay 153, Tan Sand 139, Blue Shale 82, Red Sand 101, Grey Limestone 55, Brown Lime 45 |
| 500–1000 ft | Red Sand 133, Tan Sand 68, Red Sand H2O 48, Tan Sand (H2O) 33, Red Sand (H2O) 29, Red Clay 27 |
| 1000–5000 ft | Red, Green Limestone & Sand 4, Dark Blue Shale 3, Quartz Limestone/Tan Sand H2O 1, Quartz Sand/Hickory Sandstone H2O 1, Red, Green, Tan Limestone & Sand 1, Blue 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 Kerr County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 2,216 | 72.9% | 510 |
| Environmental Soil Boring | 307 | 10.1% | 10 |
| Stock | 271 | 8.9% | 380 |
| Monitor | 112 | 3.7% | 35 |
| Public Supply | 52 | 1.7% | 670 |
| Irrigation | 41 | 1.3% | 620 |
| Other | 14 | 0.5% | 625 |
| Closed-Loop Geothermal | 11 | 0.4% | 250 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1970s | 2 | 540 | 320 |
| 1980s | 1 | 178 | 82 |
| 1990s | 1 | 380 | 250 |
| 2000s | 1,031 | 440 | 290 |
| 2010s | 1,037 | 430 | 305 |
| 2020s | 969 | 512 | 334 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 553033 | 2020 | 1,520 | 335 | 800 | Monitor |
| 346462 | 2013 | 1,421 | — | — | Domestic |
| 710578 | 2025 | 1,400 | — | 500 | Monitor |
| 643729 | 2022 | 1,390 | 700 | 80 | Stock |
| 643767 | 2023 | 1,350 | 670 | — | Stock |
| 643751 | 2023 | 1,350 | — | — | Stock |
| 643749 | 2022 | 1,350 | — | 100 | Stock |
| 643741 | 2023 | 1,300 | 620 | 100 | Stock |
| 643734 | 2023 | 1,300 | — | — | Stock |
| 698729 | 2025 | 1,195 | 816 | — | Unknown |
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 Kerr 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.