Texas well grid 18-50
A 7.5-minute quadrangle of the Texas state well grid, mostly in Collin County and Denton County. 752 reports, median depth 20 ft.
752Reports
20 ftMedian depth
453 ftWater at
25 gpmMedian yield
What you will drill through in grid 18-50
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Topsoil 75, Gray Shale 75, Brown Clay 44, Yellow Clay 44, Clay 34, Tan Clay 32 |
| 25–50 ft | Gray Shale 25, Dark Gray Shale 6, Shale - Gray 4, Grey Shale 3, Shale 2, Grey Weathered Shale 1 |
| 50–100 ft | Gray Shale 23, Grey Shale 2, Crm/Gray Chalk 2, Lime & Grey Clay 1, Gray Clay 1, Lime Layers 1 |
| 100–200 ft | Gray Shale 24, Blue Clay 1, Shale W/Sand Streaks 1, Hard Limestone 1, Sand Sandy Grey Clay 1, Gray Shale/Sand 1 |
| 200–300 ft | Gray Shale 9, Sand 5, Sandy Gray Shale 3, (Sand) 2, Shale 2, Lime, Shale 1 |
| 300–500 ft | Sand 28, Gray Shale 20, Shale 6, Sand/Gray Shale 4, Gray Shale/Sand 3, Sandy Gray Shale 4 |
| 500–1000 ft | Sand 89, Gray Shale 45, Shale 35, Sandy Shale 12, Broken Sand 11, Sand And Shale 7 |
| 1000–5000 ft | Sand 16, Shale 11, Limestone 7, Broken Sand 5, Gray Shale 4, Sandy Gray Shale 1 |
Who drills here
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 268 | 35.6% | 8 |
| Monitor | 264 | 35.1% | 20 |
| Irrigation | 90 | 12.0% | 940 |
| Closed-Loop Geothermal | 56 | 7.4% | 250 |
| Stock | 23 | 3.1% | 980 |
| Other | 23 | 3.1% | 20 |
| Domestic | 14 | 1.9% | 650 |
| Test Well | 8 | 1.1% | 31 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 154 | 250 | 470 |
| 2010s | 432 | 15 | 500 |
| 2020s | 166 | 20 | 15 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 683251 | 2023 | 2,620 | — | — | Irrigation |
| 146670 | 2007 | 2,241 | — | — | Injection |
| 232038 | 2003 | 2,169 | — | 650 | Public Supply |
| 297459 | 2012 | 1,900 | 890 | 200 | Stock |
| 502299 | 2018 | 1,760 | 927 | — | Irrigation |
| 297446 | 2012 | 1,716 | 850 | 200 | Stock |
| 296439 | 2012 | 1,716 | 850 | 210 | Irrigation |
| 297453 | 2012 | 1,656 | 803 | 200 | Stock |
| 296442 | 2012 | 1,656 | 803 | 210 | Irrigation |
| 461073 | 2016 | 1,600 | 800 | 20 | 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 18-50?
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, Denton County, Dallas County, Grayson County, Hunt County.