Texas well grid 40-37
A 7.5-minute quadrangle of the Texas state well grid, mostly in Coryell County and McLennan County. 282 reports, median depth 21 ft.
282Reports
21 ftMedian depth
15 ftWater at
15 gpmMedian yield
What you will drill through in grid 40-37
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Dark Brown Clay 139, Tan Limestone 31, Light Brown/Tan Limestone W/Layers Of Brown/Yellow Brown Cla 59, Gray Limestone 45, Dark Gray Clay 43, Light Brown Limestone 20 |
| 25–50 ft | Dark Gray Clay And Gray Limestone 10, Dark Gray Clay 9, Gray Limestone 9, Blue Gray Shale 6, Dark Gray Shale 4, Blue Gray Limestone 3 |
| 100–200 ft | Tan Limestone (Moist) 1, Gray Shale 1 |
| 200–300 ft | Black Shale 1, Gray Lime/Shale 1, Thick Gray Clay 1 |
| 300–500 ft | Gray/White L.S. + Shale 1, Gray Shale / White Limestone 1 |
| 500–1000 ft | Trinity Sands 1, Limestone 1, Sand (Water) 1, Black Sandy Shale 1, Sand 1, Red Shale 1 |
| 1000–5000 ft | Gummy Shale 1 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| White Drilling Company, Inc. | 144 | 22 | — | 2016–2025 |
| Roddy Qualls Environmental Drilling | 28 | 27 | — | 2016–2021 |
| Sunbelt Industrial Services | 14 | 8 | — | 2011–2025 |
| Vortex Drilling, Inc. | 12 | 15 | — | 2015–2025 |
| Lewis Environmental Drilling, Inc. | 10 | 20 | — | 2001 |
| Alamo1 Drilling | 9 | 20 | — | 2026 |
| WEST Drilling | 9 | 8 | — | 2015–2020 |
| Alamo Environmental dba Vortex Drilling | 8 | 29 | — | 2023 |
| MagnaCore Drilling & Environmental Services | 7 | 6 | — | 2003–2011 |
| Gainco, Inc. | 6 | — | — | 2013 |
| Environmental Logistics Company, LLC | 5 | 3 | — | 2019 |
| RQ Drilling | 4 | — | — | 2015 |
| Strata Core Services, LLC | 4 | 22 | — | 2011 |
| qualls drilling | 3 | 21 | — | 2015 |
| TWF Drilling, LLC | 3 | 20 | — | 2004 |
| Talon Drilling, LP | 3 | 15 | — | 2004 |
| Groundwater Monitoring Inc. | 2 | 4 | — | 2006 |
| Total Support Services | 2 | 30 | — | 2002 |
| Lucy Creek Water Well Service | 1 | 1,100 | — | 2026 |
| Associated Well Services, Inc. | 1 | 35 | 1 | 2016 |
| McNeese Drilling Co. | 1 | 32 | 15 | 2017 |
| mcpherson | 1 | — | 10 | 2014 |
| Harrison & Sons Well Service, Inc. | 1 | 1,035 | — | 2005 |
| Tom Lovelace Water Well Service | 1 | — | — | 2004 |
| Jones Drilling Inc. | 1 | 945 | 25 | 2005 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Injection | 125 | 44.3% | 21 |
| Monitor | 97 | 34.4% | 27 |
| Environmental Soil Boring | 52 | 18.4% | 7 |
| Domestic | 5 | 1.8% | 1,035 |
| De-watering | 2 | 0.7% | 35 |
| Stock | 1 | 0.4% | — |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 27 | 20 | 9 |
| 2010s | 90 | 21 | 10 |
| 2020s | 165 | 23 | 15 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 728165 | 2026 | 1,100 | — | — | Domestic |
| 181885 | 2005 | 1,035 | 475 | — | Domestic |
| 64274 | 2005 | 945 | 562 | 25 | Domestic |
| 728782 | 2026 | 40 | — | — | Monitor |
| 728777 | 2026 | 40 | — | — | Monitor |
| 616107 | 2022 | 40 | — | — | Monitor |
| 262363 | 2011 | 40 | — | — | Monitor |
| 262362 | 2011 | 40 | — | — | Monitor |
| 596062 | 2021 | 38 | — | — | Monitor |
| 596061 | 2021 | 37 | — | — | Monitor |
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 40-37?
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 Coryell County, McLennan County, Brazoria County.