Texas well grid 68-13
A 7.5-minute quadrangle of the Texas state well grid, mostly in Comal County and Starr County. 1,209 reports, median depth 480 ft.
1,209Reports
480 ftMedian depth
260 ftWater at
10 gpmMedian yield
What you will drill through in grid 68-13
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Topsoil 143, Caliche 133, Tan Limestone 90, Top Soil 82, Cream Limestone 72, Dirt 70 |
| 25–50 ft | Grey Limestone 24, Gray L/S 18, Gray L/S & Shale 17, Gray Limestone 13, Tan 12, Cream Limestone 11 |
| 50–100 ft | Grey Limestone 48, Tan Limestone 45, Yellow L/S 27, Gray L/S 26, Gray Limestone 20, Tan 19 |
| 100–200 ft | Grey Limestone 80, Tan Limestone 51, Gray L/S 53, Tan Lime 31, Tan 35, Gray Limestone 31 |
| 200–300 ft | Grey Limestone 58, Gray L/S 60, Tan Limestone 40, Lt.Gray Lime 34, Tan 28, Tan Lime 26 |
| 300–500 ft | Tan Limestone 57, Td 59, Grey Limestone 38, Gray Lime 33, Gray Limestone 36, Tan 30 |
| 500–1000 ft | Td 76, Shale 24, Grey Shale 15, Grey Rock 9, Pine Island Shale 9, Gray Limestone 8 |
Who drills here
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 1,015 | 84.0% | 490 |
| Environmental Soil Boring | 145 | 12.0% | 7 |
| Public Supply | 23 | 1.9% | 520 |
| Irrigation | 10 | 0.8% | 460 |
| Other | 4 | 0.3% | 400 |
| Monitor | 3 | 0.2% | 610 |
| Stock | 3 | 0.2% | 540 |
| Test Well | 3 | 0.2% | 520 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 563 | 460 | 245 |
| 2010s | 408 | 500 | 263 |
| 2020s | 238 | 500 | 308 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 426127 | 2016 | 4,110 | 296 | — | Domestic |
| 113189 | 2007 | 926 | 266 | 10 | Domestic |
| 633163 | 2023 | 800 | 376 | 2 | Public Supply |
| 629032 | 2022 | 800 | — | — | Public Supply |
| 11584 | 2002 | 780 | — | 10 | Domestic |
| 488983 | 2018 | 755 | 360 | — | Domestic |
| 146202 | 2008 | 750 | 560 | — | Domestic |
| 298802 | 2012 | 740 | 445 | — | Domestic |
| 274339 | 2011 | 740 | 425 | 10 | Domestic |
| 488487 | 2018 | 720 | 384 | 10 | Public Supply |
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 68-13?
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 Comal County, Starr County, Guadalupe County, Bandera County.