Texas well grid 57-17
A 7.5-minute quadrangle of the Texas state well grid, mostly in Llano County and Mason County. 295 reports, median depth 178 ft.
295Reports
178 ftMedian depth
40 ftWater at
6 gpmMedian yield
What you will drill through in grid 57-17
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Topsoil 243, Red Sandy Clay 69, Red Granite 58, Red Metamorphic 32, Brown Clay & Gravel 29, Red & Black Metamorphic 25 |
| 25–50 ft | Red & Black Metamorphic 21, Red Granite 14, Red Metamorphic 8, Red And Gray Granite 6, Gray Granite 6, Red & Gray Metamorphic 4 |
| 50–100 ft | Red Granite 10, Gray Granite 9, Red & Black Metamorphic 8, Red Metamorphic 8, Grey Granite 3, Gray Decomposed Granite 1 |
| 100–200 ft | Red Metamorphic 13, Red Granite 4, Gray Granite 5, Grey Granite 3, Red & Black Metamorphic 3, Red & Gray Metamorphic 3 |
| 200–300 ft | Red Granite 3, Gray Granite 2, Gray & Red Metamorphic 2, 1.5 Gpm 1, 1 Gpm 1, Brown & Red Granite With White Quartz 1 |
| 300–500 ft | Red Granite 2, Water 1, Red & Brown Granite 1, Red & Black Metamorphic 1 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Virdell Drilling Inc. | 121 | 160 | 8 | 2001–2018 |
| Magill Drilling & Water Well Service, LLC | 80 | 175 | 7 | 2017–2026 |
| Walden Drilling Inc | 64 | 180 | 5 | 2010–2025 |
| Magill Drilling | 6 | 198 | 21 | 2015–2016 |
| Highland Drilling Inc. | 5 | 180 | 20 | 2007–2009 |
| L & L Drilling Co. | 4 | 505 | 5 | 2016–2026 |
| Magill Well Service | 4 | 180 | 3 | 2003–2015 |
| brian Walden drilling | 4 | 127 | — | 2011 |
| Ashley Drilling & Well Service | 2 | 160 | — | 2026 |
| Louis Bergmann & Sons | 1 | 150 | — | 2024 |
| Texan Water | 1 | 196 | 5 | 2024 |
| aquatech solutions | 1 | 160 | 5 | 2023 |
| Magill Drilling & Well Service | 1 | 200 | 4 | 2015 |
| Apex Drilling, Inc. | 1 | — | 36 | 2011 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 239 | 81.0% | 160 |
| Stock | 56 | 19.0% | 200 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 92 | 150 | 30 |
| 2010s | 104 | 180 | 40 |
| 2020s | 99 | 180 | 50 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 416595 | 2016 | 505 | 50 | 3 | Domestic |
| 416594 | 2016 | 505 | 51 | 2 | Domestic |
| 291136 | 2012 | 500 | — | — | Domestic |
| 227302 | 2010 | 500 | 1 | 1 | Domestic |
| 730319 | 2026 | 405 | 50 | 8 | Domestic |
| 91514 | 2006 | 400 | — | 2 | Domestic |
| 665707 | 2024 | 360 | — | — | Stock |
| 110405 | 2007 | 340 | 28 | 2 | Domestic |
| 226246 | 2010 | 320 | 20 | 1 | Domestic |
| 684018 | 2024 | 305 | — | — | 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 57-17?
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 Llano County, Mason County, Gillespie County.