Texas well grid 79-21
A 7.5-minute quadrangle of the Texas state well grid, mostly in Goliad County. 311 reports, median depth 220 ft.
311Reports
220 ftMedian depth
79 ftWater at
50 gpmMedian yield
What you will drill through in grid 79-21
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 84, Caliche 75, Ss 41, Top Soil 34, Surface 33, Topsoil 18 |
| 25–50 ft | Clay 33, Sand 11, Red Clay 13, Rock 9, Shale 5, Caliche 4 |
| 50–100 ft | Clay 60, Red Clay 41, Sand 38, Sandstone 11, Rock 7, White Clay 4 |
| 100–200 ft | Clay 68, Sand 73, Red Clay 38, Sd 16, Water Sand And Stone 9, Grey Clay 7 |
| 200–300 ft | Sand 46, Clay 38, Sd 22, Water Sand And Stone 8, Clay & Sand 5, Red Clay 6 |
| 300–500 ft | Clay 13, Sand 13, Sd 5, Shale 3, Coarse Brown Sand 1, Sand & Shale 1 |
| 500–1000 ft | Sandy Shale 1, Sand 1, Shale 1, Grey Clay 1, Hard Brown Clay 1, Hard Sand 1 |
| 1000–5000 ft | Sand 1, Sandy, Shale 1, Shale 1 |
Who drills here
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 161 | 51.8% | 240 |
| Stock | 46 | 14.8% | 240 |
| Environmental Soil Boring | 41 | 13.2% | 14 |
| Monitor | 35 | 11.3% | 30 |
| Rig Supply | 13 | 4.2% | 280 |
| Test Well | 4 | 1.3% | 25 |
| Industrial | 3 | 1.0% | 245 |
| Irrigation | 3 | 1.0% | 865 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 96 | 240 | 67 |
| 2010s | 158 | 220 | 90 |
| 2020s | 57 | 190 | 81 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 668616 | 2024 | 1,245 | 2 | 1,200 | Irrigation |
| 93908 | 2003 | 865 | 130 | 750 | Irrigation |
| 326990 | 2010 | 652 | 72 | 270 | Public Supply |
| 560066 | 2020 | 610 | 91 | 610 | Public Supply |
| 103436 | 2007 | 465 | 95 | 75 | Domestic |
| 605258 | 2022 | 440 | 111 | 80 | Stock |
| 377137 | 2014 | 422 | 125 | 50 | Domestic |
| 605260 | 2022 | 380 | 108 | 100 | Stock |
| 474724 | 2018 | 380 | 145 | 85 | Stock |
| 346747 | 2013 | 368 | 110 | 60 | 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 79-21?
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 Goliad County.