Texas well grid 66-22
A 7.5-minute quadrangle of the Texas state well grid, mostly in Colorado County and Austin County. 101 reports, median depth 165 ft.
101Reports
165 ftMedian depth
36 ftWater at
70 gpmMedian yield
What you will drill through in grid 66-22
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Topsoil 28, Sand 17, Clay 17, Top Soil 12, Yellow Clay 11, White Clay 11 |
| 25–50 ft | Sand 22, White Clay 5, Clay 5, Gravel 3, Rock 2, Clay, Sand 3 |
| 50–100 ft | Sand 28, Rock 11, Tan Clay 10, Sand & Rock 10, Clay 6, Red Clay 6 |
| 100–200 ft | Sand 43, Rock 17, Clay 11, White Clay 10, Wh Clay 4, Tan Clay 7 |
| 200–300 ft | Sand 11, Clay 5, Rock 3, Wh Clay 3, White Clay 2, Course Sand 2 |
| 300–500 ft | Clay 5, Sand 5, Clay + Rock 1, Sand & Rocks 1, Shale 1, Sand, Clay 1 |
| 500–1000 ft | Sand .014 1, Clay 1 |
Who drills here
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 56 | 55.4% | 160 |
| Irrigation | 16 | 15.8% | 230 |
| Stock | 14 | 13.9% | 130 |
| Rig Supply | 7 | 6.9% | 220 |
| Environmental Soil Boring | 3 | 3.0% | 12 |
| Industrial | 2 | 2.0% | 200 |
| Closed-Loop Geothermal | 1 | 1.0% | 1,115 |
| Other | 1 | 1.0% | 165 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 27 | 160 | 35 |
| 2010s | 46 | 182 | 36 |
| 2020s | 28 | 160 | 39 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 708699 | 2025 | 1,115 | — | — | Closed-Loop Geothermal |
| 651498 | 2023 | 588 | 60 | 2,650 | Irrigation |
| 707593 | 2025 | 580 | 70 | 1,200 | Irrigation |
| 367410 | 2014 | 510 | 60 | 160 | Irrigation |
| 281980 | 2012 | 480 | 18 | — | Irrigation |
| 281976 | 2012 | 480 | 18 | 400 | Irrigation |
| 285716 | 2012 | 440 | 18 | 400 | Irrigation |
| 408529 | 2015 | 413 | 32 | 2,500 | Irrigation |
| 203801 | 2008 | 270 | 40 | 100 | Rig Supply |
| 536950 | 2020 | 260 | 44 | 70 | Stock |
Every figure here comes from a report a licensed driller filed on the day the work ended — sometimes decades ago. It describes what was found then, not what a well yields today, and it is not a statement that any well is sound, potable or still in use.
Drilling a well near grid 66-22?
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.
This grid falls in Colorado County, Austin County, Harris County.