Water wells in Galveston County, Texas
4,979 well reports on file. The median well here was taken to 120 ft and struck water at 70 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Galveston County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 2,150, Sand 855, Soil 479, Top Soil 375, Topsoil 324, No Recovery 163 |
| 25–50 ft | Clay 973, Sand 579, Clay-Red 52, Clay & Shale 43, Clay Tan 38, Red Clay 35 |
| 50–100 ft | Sand 1,291, Clay 449, Clay & Shale 50, Sand Tan 43, Sand-Tan-Fine Sand-Tan-.006-.008 39, Sand-Tan-Fine 37 |
| 100–200 ft | Clay 1,198, Sand 1,143, Clay & Shale 145, Clay And Shale 151, Clay-Red 60, Red Clay 47 |
| 200–300 ft | Clay 265, Sand 235, Clay & Shale 28, Clay And Shale 18, Gray Clay 13, Clay-Red 9 |
| 300–500 ft | Sand 895, Clay 371, Clay & Shale 52, Sand .006 42, Clay And Shale 36, Shell 32 |
| 500–1000 ft | Sand 478, Clay 151, Sand .006 37, Sand-Gray-.006-.008 25, Clay And Shale 18, Sand-Gray-Fine Sand-Gray-.006-.008 14 |
| 1000–5000 ft | Sand 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 Galveston County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 2,699 | 54.2% | 415 |
| Monitor | 1,456 | 29.2% | 20 |
| Environmental Soil Boring | 450 | 9.0% | 12 |
| Test Well | 87 | 1.7% | 25 |
| Injection | 84 | 1.7% | 20 |
| Other | 39 | 0.8% | 25 |
| Irrigation | 34 | 0.7% | 463 |
| Rig Supply | 34 | 0.7% | 352 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 1,913 | 160 | 75 |
| 2010s | 1,896 | 105 | 81 |
| 2020s | 1,170 | 120 | 60 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 520441 | 2019 | 4,580 | 105 | 100 | Domestic |
| 89462 | 2006 | 3,703 | 86 | 85 | Domestic |
| 630411 | 2023 | 1,115 | 97 | 85 | Domestic |
| 292991 | 2012 | 1,064 | 44 | 53 | Test Well |
| 268912 | 2011 | 1,024 | 88 | 76 | Test Well |
| 292997 | 2012 | 935 | 46 | 523 | Public Supply |
| 427654 | 2016 | 925 | 106 | 410 | Public Supply |
| 159220 | 2008 | 850 | 60 | 790 | Public Supply |
| 516075 | 2019 | 846 | 106 | 805 | Public Supply |
| 191205 | 2009 | 833 | — | — | 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 Galveston 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.