Water wells in Montgomery County, Texas
14,319 well reports on file. The median well here was taken to 220 ft and struck water at 70 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Montgomery County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 8,322, Sand 3,700, Top Soil 927, Topsoil 832, Red Clay 299, Sand, Clay 273 |
| 25–50 ft | Sand 3,578, Clay 2,508, Clay, Sand 343, Sand, Clay 263, Gravel 182, Rock 156 |
| 50–100 ft | Clay 4,866, Sand 4,746, Rock 394, Clay, Sand 349, Sand, Clay 318, Cl 113 |
| 100–200 ft | Sand 8,011, Clay 6,796, Rock 1,050, Clay, Sand 558, Sand, Clay 590, Shale 305 |
| 200–300 ft | Sand 3,809, Clay 2,534, Rock 624, Shale 379, Clay, Sand 214, Sand, Clay 208 |
| 300–500 ft | Sand 1,957, Clay 964, Rock 301, Shale 277, Snd 41, Clay, Sand 60 |
| 500–1000 ft | Sand 318, Clay 252, Shale 45, Sand/Clay 34, Clay/Sand 37, Rock 28 |
| 1000–5000 ft | Sand 105, Clay 103, Shale 26, Sand/Clay 30, Clay/Sand 25, Clay/Shale 17 |
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 Montgomery County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 10,669 | 74.5% | 220 |
| Monitor | 1,248 | 8.7% | 30 |
| Irrigation | 984 | 6.9% | 215 |
| Public Supply | 554 | 3.9% | 561 |
| Environmental Soil Boring | 262 | 1.8% | 15 |
| Industrial | 140 | 1.0% | 290 |
| Other | 133 | 0.9% | 200 |
| Injection | 121 | 0.8% | 38 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1960s | 1 | 1,401 | 53 |
| 1970s | 3 | 930 | 90 |
| 1980s | 3 | 1,160 | 109 |
| 1990s | 6 | 260 | 76 |
| 2000s | 4,952 | 225 | 72 |
| 2010s | 5,881 | 210 | 69 |
| 2020s | 3,473 | 210 | 70 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 286883 | 2012 | 4,016 | 356 | 2,023 | Public Supply |
| 319991 | 2013 | 3,400 | 205 | 2,414 | Public Supply |
| 318243 | 2013 | 3,244 | 394 | 1,500 | Public Supply |
| 398375 | 2015 | 3,102 | 261 | 2,514 | Public Supply |
| 319985 | 2013 | 3,100 | 211 | 2,414 | Public Supply |
| 277024 | 2012 | 3,010 | 117 | 2,023 | Public Supply |
| 521919 | 2019 | 3,000 | 321 | 2,209 | Public Supply |
| 361922 | 2014 | 3,000 | 94 | 2,023 | Public Supply |
| 343107 | 2012 | 3,000 | — | — | Test Well |
| 310495 | 2013 | 3,000 | 85 | 2,514 | Public 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 Montgomery 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.