Water wells in Brazoria County, Texas
12,959 well reports on file. The median well here was taken to 305 ft and struck water at 50 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Brazoria County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 5,940, Sand 1,901, Soil 1,783, Top Soil 1,376, Red Clay 715, Topsoil 710 |
| 25–50 ft | Clay 1,540, Sand 1,265, Red Clay 304, Clay-Red 245, Clay Tan 66, Sand-Tan-.006-.008 49 |
| 50–100 ft | Sand 3,249, Clay 2,677, Red Clay 442, Clay-Red 345, Sand-Tan-.006-.008 106, Sand-Tan-Fine 107 |
| 100–200 ft | Clay 4,532, Sand 4,401, Red Clay 597, Clay-Red 490, Sand-Tan-.006-.008 249, Clay Td 268 |
| 200–300 ft | Sand 2,242, Clay 2,194, Red Clay 230, Clay-Red 190, Clay Td 167, Sand .006 90 |
| 300–500 ft | Sand 2,926, Clay 1,744, Clay Td 627, Red Clay 192, Clay-Red 151, Sand-Gray-.006-.008 132 |
| 500–1000 ft | Sand 752, Clay 395, Clay Td 280, Sand-Gray-.006-.008 67, Sand .006 44, Sand-Gray-Fine Sand-Gray-.006-.008 45 |
| 1000–5000 ft | Sand 28, Clay 23, Clay (Gray) 2, Sand & Clay 3, Clay/Shale 2, Sand/Clay 2 |
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 Brazoria County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 9,329 | 72.0% | 351 |
| Monitor | 1,439 | 11.1% | 25 |
| Environmental Soil Boring | 435 | 3.4% | 15 |
| Stock | 386 | 3.0% | 145 |
| Irrigation | 291 | 2.2% | 190 |
| Public Supply | 241 | 1.9% | 365 |
| Rig Supply | 217 | 1.7% | 180 |
| Industrial | 206 | 1.6% | 320 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1970s | 1 | — | 75 |
| 1990s | 1 | 634 | 65 |
| 2000s | 4,809 | 280 | 46 |
| 2010s | 4,983 | 305 | 50 |
| 2020s | 3,165 | 320 | 55 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 510469 | 2018 | 4,041 | 155 | 70 | Domestic |
| 622677 | 2022 | 3,701 | 150 | — | Domestic |
| 517704 | 2019 | 2,224 | 10 | — | Domestic |
| 395701 | 2015 | 2,015 | 95 | — | Public Supply |
| 644879 | 2023 | 1,592 | 146 | 2,018 | Industrial |
| 78807 | 2006 | 1,540 | 162 | 1,353 | Public Supply |
| 392675 | 2015 | 1,500 | 209 | 2,014 | Public Supply |
| 348973 | 2013 | 1,500 | 219 | 1,511 | Public Supply |
| 210856 | 2008 | 1,479 | 198 | 1,507 | Public Supply |
| 719990 | 2026 | 1,450 | 133 | 1,800 | 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 Brazoria 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.