Texas well grid 30-37
A 7.5-minute quadrangle of the Texas state well grid, mostly in Callahan County. 203 reports, median depth 50 ft.
203Reports
50 ftMedian depth
23 ftWater at
15 gpmMedian yield
What you will drill through in grid 30-37
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Sand 51, Top Soil 50, Sandy Clay 43, Brown Clay 30, Red Clay 24, Sand & Gravel 19 |
| 25–50 ft | Yellow Shale 27, Sand & Gravel 21, Yellow Clay 14, Gravel 13, Water Sand 10, Sand And Gravel 9 |
| 50–100 ft | Yellow Clay 8, Yellow Shale 7, Blue Shale 5, Blue Clay And Shale 4, Sand & Gravel 4, Tan Limestone 2 |
| 100–200 ft | Blue Shale 2, Blue Clay 2, Blue Shale And Limestone Stringers 1, Red Rock 2, Water Sand 2, Yellow Clay 2 |
| 200–300 ft | White/Gray Rock 1, Blue Clay And Shale 1 |
Who drills here
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Diversified Water Well Drilling | 48 | 50 | 15 | 2003–2017 |
| White Drilling Company, Inc. | 29 | 54 | — | 2002–2021 |
| Zavala Drilling, CO | 18 | 46 | 12 | 2007–2013 |
| Moore's Pump & Supply | 14 | 56 | 12 | 2003–2016 |
| LEONARD WATER SERVICES | 13 | 51 | 20 | 2002–2025 |
| Peterson Drilling & Testing, Inc. | 13 | — | — | 2005–2006 |
| Michael Gilliam Consultant Services | 12 | 105 | 0 | 2014–2021 |
| T&T Drilling | 7 | 20 | — | 2003 |
| Leonard Water Service | 6 | 51 | — | 2002–2008 |
| DAVIS ENVIRONMENTAL DRILLING | 4 | 20 | — | 2003 |
| WEST Drilling | 3 | 18 | — | 2017 |
| A&W Drilling Services, Ltd. | 3 | 51 | — | 2011 |
| Savage Excavation | 2 | 13 | — | 2025 |
| Sunbelt Industrial Services | 2 | 12 | — | 2017 |
| Diversified Water Well | 2 | — | 10 | 2015 |
| qualls drilling | 2 | 22 | — | 2014 |
| DIVERSIFIED WATER WELLS | 2 | 50 | 20 | 2009–2011 |
| GM Enterprises | 2 | 15 | — | 2009 |
| Peterson Drilling and Testing, Inc. | 2 | — | — | 2008 |
| T & T Drilling, LTD | 2 | 30 | — | 2006–2007 |
| SKG Engineering, LLC | 1 | 30 | — | 2025 |
| Roddy Qualls Environmental Drilling | 1 | 15 | — | 2023 |
| Geothermal Drilling inc | 1 | 300 | — | 2023 |
| Beaird Water Well | 1 | 55 | 18 | 2020 |
| SIMMONS WATER WELL SERVICE | 1 | 60 | — | 2019 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Irrigation | 105 | 51.7% | 50 |
| Monitor | 36 | 17.7% | 20 |
| Domestic | 35 | 17.2% | 54 |
| Stock | 10 | 4.9% | 58 |
| Environmental Soil Boring | 9 | 4.4% | 20 |
| Test Well | 6 | 3.0% | 15 |
| Closed-Loop Geothermal | 1 | 0.5% | 300 |
| Other | 1 | 0.5% | 204 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 84 | 45 | 21 |
| 2010s | 96 | 52 | 25 |
| 2020s | 23 | 50 | 19 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 639252 | 2023 | 300 | — | — | Closed-Loop Geothermal |
| 492611 | 2018 | 204 | — | 0 | Irrigation |
| 490841 | 2018 | 204 | — | — | Other |
| 114925 | 2007 | 188 | 23 | — | Irrigation |
| 275398 | 2011 | 140 | 90 | 6 | Irrigation |
| 53810 | 2005 | 140 | 107 | — | Irrigation |
| 384726 | 2014 | 133 | 113 | 15 | Domestic |
| 384728 | 2014 | 130 | 120 | 12 | Domestic |
| 569919 | 2021 | 128 | 69 | — | Irrigation |
| 509063 | 2019 | 125 | 70 | — | Irrigation |
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 30-37?
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 Callahan County.