Texas well grid 18-49
A 7.5-minute quadrangle of the Texas state well grid, mostly in Denton County and Collin County. 453 reports, median depth 200 ft.
453Reports
200 ftMedian depth
150 ftWater at
25 gpmMedian yield
What you will drill through in grid 18-49
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Yellow Clay 92, Gray Shale 60, Topsoil 43, Black Topsoil 30, Top Soil 27, Sand 23 |
| 25–50 ft | Gray Shale 72, Sand 28, Tan Sand 10, Gray Clay 7, Grey Shale 6, Brown Silty Sand With Layers Of Clay 5 |
| 50–100 ft | Sand 37, Gray Shale 35, Shale 12, Grayshale 7, Grey Shale 7, Sandy Shale 7 |
| 100–200 ft | Sand 94, Gray Shale 57, Shale 11, Sandy Shale 11, Grey Shale 7, Grayshale 6 |
| 200–300 ft | Sand 89, Gray Shale 62, Shale 17, Sandy Shale 18, Blue Shale 9, Brown Clay 3 |
| 300–500 ft | Sand 43, Gray Shale 30, Shale 16, Broken Sand 6, Grayshale 4, Gray Shale/Sand 3 |
| 500–1000 ft | Sand 20, Shale 15, Gray Shale 14, Limestone 9, Sandy Shale 9, Rock 4 |
| 1000–5000 ft | Sand 19, Shale 14, Sandy Shale 6, Gray Shale 5, Shale Break 2, Shale And Sand Streaks 2 |
Who drills here
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 139 | 30.7% | 28 |
| Domestic | 108 | 23.8% | 280 |
| Irrigation | 77 | 17.0% | 340 |
| Environmental Soil Boring | 50 | 11.0% | 15 |
| Stock | 32 | 7.1% | 357 |
| Closed-Loop Geothermal | 30 | 6.6% | 300 |
| Public Supply | 9 | 2.0% | 1,522 |
| Test Well | 4 | 0.9% | 350 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 158 | 250 | 140 |
| 2010s | 177 | 155 | 154 |
| 2020s | 118 | 105 | 160 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 649464 | 2023 | 1,920 | 594 | 420 | Public Supply |
| 405829 | 2015 | 1,720 | — | 350 | Irrigation |
| 705620 | 2025 | 1,715 | — | — | Public Supply |
| 516548 | 2019 | 1,700 | — | — | Irrigation |
| 189189 | 2009 | 1,635 | — | — | Domestic |
| 485452 | 2018 | 1,610 | — | — | Public Supply |
| 449193 | 2017 | 1,610 | — | — | Irrigation |
| 705642 | 2025 | 1,600 | 784 | — | Irrigation |
| 453013 | 2017 | 1,571 | 616 | 393 | Public Supply |
| 218864 | 2010 | 1,550 | 510 | 260 | Irrigation |
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 18-49?
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 Denton County, Collin County, Dallas County.