Texas well grid 18-43
A 7.5-minute quadrangle of the Texas state well grid, mostly in Collin County. 110 reports, median depth 907 ft.
110Reports
907 ftMedian depth
480 ftWater at
25 gpmMedian yield
What you will drill through in grid 18-43
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Yellow Clay 29, Topsoil 25, Black Topsoil 21, Top Soil 18, Gray Shale 12, Shale 9 |
| 25–50 ft | Gray Shale 7, Austin Chalk 7, Brown Shale/ Gray Shale 2, Sand 1, Shale 1, Gray Tan Limestone Chalk 1 |
| 50–100 ft | Gray Shale 21, Gray Shale With Lime Stringers 2, Gray Sandstone, Gray Clay 1, Gray Clay 2, Gray And Brown Shale 1, Dark Green Clay, Sandstone, Silty Sand 1 |
| 100–200 ft | Gray Shale 19, Black Clay 1, Rock And Black Clay 1, Shale 2, Dark Green Shale, Clay 1, Gray Sandy Shale, Gray Clay 1 |
| 200–300 ft | Gray Shale 5, Sand 2, Gray Clay And Shale, White Shale, Sandstone, Sand 1, White Clay, Chalk, Sandy Shale, Gray Shale, Sand 1, Light Gray Clay And Shale, Gray Shale, Sand 1, Gray Clay, Gray Shale, Silt Stone, Sand 1 |
| 300–500 ft | Sand 4, Rock 2, Tan Watersand 2, Gray Shale & Sand 1, Gray Clay, Gray Shale, Tanm-Bnrown Quartz 1, Gray Clay, Gray Shale 1 |
| 500–1000 ft | Sand 69, Gray Shale 35, Shale 30, Sand Shale Sequence 9, Red Shale 10, Sand And Shale 4 |
| 1000–5000 ft | Shale 8, Sand 8, Sand And Shale 3, Gray Shale 4, Gray Clay & Shale 1, Broken Sand 1 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Earth Tech | 32 | 920 | 25 | 2004–2015 |
| Double D Drilling | 17 | 910 | 23 | 2011–2026 |
| Dierks Drilling Co. | 10 | 60 | 10 | 2001–2012 |
| A.L. Moser Drilling, Inc. | 9 | 1,000 | 12 | 2003–2016 |
| THI WATER WELL | 4 | 1,275 | — | 2022–2025 |
| Environmental Logistics Company, LLC | 4 | 22 | — | 2022–2025 |
| Barco Well Service, LP | 3 | 940 | 204 | 2016–2024 |
| Ground to Sprinkler | 3 | 500 | 25 | 2006–2007 |
| Erwin Water Well Drilling | 2 | 1,000 | 35 | 2010–2026 |
| M5 Drilling | 2 | 650 | 31 | 2025 |
| Roddy Qualls Environmental Drilling | 2 | 15 | — | 2018 |
| SCI | 2 | 40 | — | 2008 |
| DALE CHEPULIS | 2 | 1,015 | 20 | 2004 |
| Dale Chepulis/Lonestar Underground Inc. | 2 | 670 | 25 | 2003 |
| DFW Well Services LLC | 1 | 1,170 | 17 | 2025 |
| Desert Eagle Drilling | 1 | 914 | 40 | 2025 |
| Action Water Wells Trust | 1 | 1,137 | — | 2025 |
| Hydro Resources | 1 | 1,500 | — | 2024 |
| Axis Drilling | 1 | 1,040 | — | 2025 |
| Holly Water Wells | 1 | 2,450 | 380 | 2020 |
| Priceless Water Wells | 1 | 100 | — | 2016 |
| Andrus Drilling Company | 1 | — | 20 | 2011 |
| Strittmatter Irrigation | 1 | 1,185 | 21 | 2012 |
| J.L. Myers Company | 1 | 2,730 | 300 | 2003 |
| DD Drilling Inc. | 1 | 780 | 22 | 2008 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Irrigation | 59 | 53.6% | 900 |
| Domestic | 24 | 21.8% | 1,000 |
| Stock | 11 | 10.0% | 980 |
| Monitor | 5 | 4.5% | 16 |
| Public Supply | 4 | 3.6% | 1,538 |
| Environmental Soil Boring | 4 | 3.6% | 22 |
| Other | 1 | 0.9% | 914 |
| Industrial | 1 | 0.9% | 650 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 58 | 900 | 450 |
| 2010s | 28 | 900 | 550 |
| 2020s | 24 | 988 | 600 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 202016 | 2003 | 2,730 | 568 | 300 | Irrigation |
| 554842 | 2020 | 2,450 | 789 | 380 | Public Supply |
| 715334 | 2025 | 1,820 | 967 | — | Irrigation |
| 45517 | 2004 | 1,538 | 500 | 350 | Public Supply |
| 700677 | 2024 | 1,500 | 644 | — | Public Supply |
| 716350 | 2025 | 1,275 | 675 | — | Public Supply |
| 121585 | 2007 | 1,205 | 570 | 150 | Irrigation |
| 295099 | 2012 | 1,185 | — | 21 | Domestic |
| 729500 | 2025 | 1,170 | — | 17 | Domestic |
| 448582 | 2017 | 1,140 | — | 25 | 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 18-43?
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.