Texas well grid 66-19
A 7.5-minute quadrangle of the Texas state well grid, mostly in Colorado County. 353 reports, median depth 184 ft.
353Reports
184 ftMedian depth
97 ftWater at
27 gpmMedian yield
What you will drill through in grid 66-19
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Topsoil 66, Clay 46, Top Soil 51, Yellow Clay 35, Sand 31, Top-Soil 27 |
| 25–50 ft | Sand 34, Tan Clay 31, White Clay 15, Tan & White Clay 14, Clay 15, Yellow Clay 15 |
| 50–100 ft | Sand 51, Rock 34, Tan Clay 38, Clay 26, Sand & Rock 25, Tan Sand 11 |
| 100–200 ft | Sand 71, Rock 54, Clay 37, Tan Clay 39, Sand & Rock 29, Sand & Rock Streaks 14 |
| 200–300 ft | Sand 34, Rock 30, Clay 17, Tan Clay 14, Sand & Rock 8, Rock & Sand 7 |
| 300–500 ft | Clay 5, Sand 5, Rock 4, Sand & Rock 2, Shale 1, Rock & Sand 1 |
| 500–1000 ft | Sand 1, Rock 1, Rock & Sand 2, Clay 1, Rock & Shale Mix 1, Clay & Shale 1 |
| 1000–5000 ft | Hard Shale 1, Sand 1, Clay 1, Clay, Sand & Shale Mix 1 |
Who drills here
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 294 | 83.3% | 180 |
| Stock | 40 | 11.3% | 175 |
| Rig Supply | 7 | 2.0% | 240 |
| Irrigation | 4 | 1.1% | 205 |
| Other | 3 | 0.8% | 205 |
| Public Supply | 3 | 0.8% | 310 |
| Industrial | 2 | 0.6% | 260 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 129 | 179 | 95 |
| 2010s | 128 | 178 | 95 |
| 2020s | 96 | 195 | 105 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 531355 | 2019 | 1,190 | 37 | 120 | Stock |
| 30115 | 2003 | 732 | 163 | 35 | Domestic |
| 524991 | 2019 | 630 | 95 | 90 | Stock |
| 617746 | 2022 | 530 | 140 | 140 | Irrigation |
| 186921 | 2009 | 445 | 50 | 10 | Domestic |
| 205549 | 2008 | 410 | 132 | 50 | Domestic |
| 707486 | 2025 | 408 | 121 | 150 | Stock |
| 152412 | 2008 | 390 | 146 | 50 | Stock |
| 704895 | 2025 | 365 | 96 | 70 | Domestic |
| 284616 | 2012 | 361 | 136 | — | Domestic |
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 66-19?
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.