Water wells in Johnson County, Texas
3,487 well reports on file. The median well here was taken to 280 ft and struck water at 290 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Johnson County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Top Soil 424, Yellow Clay 354, Topsoil 314, Surface 292, Clay 225, Limestone 145 |
| 25–50 ft | Gray Shale 179, Shale 141, Sand 79, Sandy Shale 41, Grey Shale 39, Shale Gray 36 |
| 50–100 ft | Sand 237, Shale 126, Sandy Shale 117, Gray Shale 98, Sand Brown 51, Lime 50 |
| 100–200 ft | Sand 453, Shale 238, Sandy Shale 149, Gray Shale 131, Sand Brown 76, Shale Gray 69 |
| 200–300 ft | Sand 233, Shale 161, Sandy Shale 126, Gray Shale 108, Lime 79, Grey Shale 64 |
| 300–500 ft | Sand 429, Sandy Shale 212, Limestone 108, Lime 103, Shale 90, Paluxy Sand 93 |
| 500–1000 ft | Sand 283, Sandy Shale 132, Limestone 82, Lime 80, Red Bed 72, Shale 60 |
| 1000–5000 ft | Sand 73, Red Bed 26, Yellow Clay 26, Lime 20, Trinity Sand 18, Shale 15 |
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 Johnson County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 1,790 | 51.3% | 400 |
| Monitor | 544 | 15.6% | 20 |
| Environmental Soil Boring | 376 | 10.8% | 9 |
| Rig Supply | 290 | 8.3% | 1,260 |
| Irrigation | 210 | 6.0% | 220 |
| Stock | 75 | 2.2% | 280 |
| Test Well | 58 | 1.7% | 45 |
| Industrial | 43 | 1.2% | 940 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 1,347 | 300 | 360 |
| 2010s | 1,024 | 280 | 230 |
| 2020s | 1,116 | 280 | 250 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 81008 | 2006 | 1,818 | 1,140 | 150 | Rig Supply |
| 103255 | 2006 | 1,806 | 1,000 | 120 | Rig Supply |
| 659008 | 2022 | 1,802 | 1,058 | — | Public Supply |
| 137980 | 2008 | 1,785 | 1,200 | 130 | Rig Supply |
| 181435 | 2006 | 1,780 | 1,250 | 10 | Rig Supply |
| 64980 | 2005 | 1,780 | 1,200 | — | Industrial |
| 103833 | 2006 | 1,765 | 1,150 | 160 | Rig Supply |
| 534051 | 2019 | 1,740 | 900 | 5 | Domestic |
| 141560 | 2008 | 1,740 | 1,005 | 130 | Rig Supply |
| 140583 | 2008 | 1,733 | 1,150 | — | Rig Supply |
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 Johnson 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.