Texas well grid 18-44
A 7.5-minute quadrangle of the Texas state well grid, mostly in Collin County. 361 reports, median depth 16 ft.
361Reports
16 ftMedian depth
497 ftWater at
25 gpmMedian yield
What you will drill through in grid 18-44
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Dark Brown Clay 48, Tan Weathered Limestone 42, Brown Clay 41, Tan Clay 40, Top Soil , Clay , Limestone 25, Black Clay 23 |
| 25–50 ft | Tan Clay 4, Limestone 3, Tan/Grey Weathered 3, Tan Limestone 3, Gray Limestone 3, Austin Chalk 3 |
| 50–100 ft | Gray Limestone Chalk 1, Shale Lime 1, Gray Shale/Lime 1, Grey Shale 1 |
| 100–200 ft | Gray Shale 2, Shale 1 |
| 200–300 ft | Gray Shale 2, Shale 2, Sandy Shale 1, Shale With Lime Streaks 1, Sand W/Lime & Shale 1 |
| 300–500 ft | Shale 2, Sand 2, Gray Shale 2, Shale, Limestone 1, Grey Shale W/Lime Streaks 1, Sandy Grey Shale 1 |
| 500–1000 ft | Sand 10, Gray Shale 4, Shale 5, Gray Shale W Ls Stks 1, Sand Shale Sequence 2, Red Bed 2 |
| 1000–5000 ft | Sand 17, Shale 9, Gray Shale 7, Sandy Shale 5, Lime 4, Sand Shale 2 |
Who drills here
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 159 | 44.0% | 10 |
| Monitor | 155 | 42.9% | 22 |
| Irrigation | 16 | 4.4% | 1,330 |
| Test Well | 9 | 2.5% | 15 |
| Stock | 7 | 1.9% | 1,300 |
| Closed-Loop Geothermal | 5 | 1.4% | 300 |
| Public Supply | 4 | 1.1% | 2,490 |
| Industrial | 2 | 0.6% | 1,760 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 71 | 10 | 280 |
| 2010s | 211 | 18 | 378 |
| 2020s | 79 | 16 | 575 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 638186 | 2023 | 2,530 | 846 | — | Public Supply |
| 95109 | 2006 | 2,490 | — | — | Public Supply |
| 692005 | 2025 | 1,760 | 530 | 190 | Industrial |
| 460234 | 2016 | 1,600 | 500 | 85 | Irrigation |
| 638174 | 2022 | 1,550 | 624 | — | Public Supply |
| 183116 | 2005 | 1,530 | 530 | 21 | Irrigation |
| 33898 | 2004 | 1,500 | 718 | 150 | Public Supply |
| 274049 | 2011 | 1,480 | 378 | 45 | Irrigation |
| 605684 | 2022 | 1,460 | — | — | Irrigation |
| 396656 | 2015 | 1,450 | 500 | 10 | 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 18-44?
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 Collin County.