Water wells in Cass County, Texas
1,464 well reports on file. The median well here was taken to 340 ft and struck water at 125 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Cass County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 490, Sand 456, Shale 206, Topsoil 93, Top Soil 89, Red Clay 83 |
| 25–50 ft | Shale 273, Sand 175, Sand/Shale 65, Gray Shale 55, Rock 47, Sand & Shale 31 |
| 50–100 ft | Shale 454, Sand 324, Rock 105, Sand/Shale 105, Sand & Shale 61, Gray Shale 40 |
| 100–200 ft | Shale 599, Sand 473, Rock 203, Sand/Shale 167, Sand & Shale 89, Gray Shale 57 |
| 200–300 ft | Shale 582, Sand 502, Rock 188, Sand/Shale 172, Sand & Shale 100, Shale/Rock 40 |
| 300–500 ft | Shale 510, Sand 445, Rock 134, Sand/Shale 125, Sand & Shale 81, Gray Shale 51 |
| 500–1000 ft | Shale 116, Sand 58, Rock 27, Gray Shale 12, Shale W/ Sand Strks. 15, Sand W/ Shale Strks. 16 |
The rock column here is what drillers wrote down, layer by layer, in their own words — 5,345,462 layers across 707,856 wells. It is not a geological survey: two drillers may call the same clay by two names, and this site does not correct them.
Who drills in Cass County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 927 | 63.3% | 380 |
| Monitor | 228 | 15.6% | 25 |
| Environmental Soil Boring | 110 | 7.5% | 15 |
| Rig Supply | 89 | 6.1% | 300 |
| Stock | 36 | 2.5% | 500 |
| Irrigation | 32 | 2.2% | 410 |
| Test Well | 13 | 0.9% | 20 |
| Public Supply | 12 | 0.8% | 440 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 534 | 340 | 125 |
| 2010s | 561 | 340 | 125 |
| 2020s | 369 | 340 | 125 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 721260 | 2026 | 4,779 | 195 | 15 | Domestic |
| 721268 | 2026 | 4,480 | 260 | 10 | Domestic |
| 721234 | 2026 | 4,480 | 100 | 25 | Domestic |
| 518332 | 2019 | 1,015 | 152 | 58 | Test Well |
| 131912 | 2003 | 900 | 262 | 300 | Public Supply |
| 531068 | 2019 | 878 | 153 | 280 | Public Supply |
| 57620 | 2005 | 862 | 202 | 39 | Irrigation |
| 154822 | 2005 | 860 | 125 | 75 | Irrigation |
| 201382 | 2005 | 791 | 190 | 520 | Public Supply |
| 535998 | 2020 | 769 | — | — | Domestic |
Every figure on this site is a median, never an average. On reported yield the average is twice the median, because a handful of entries are typing errors — the largest reads 2,200,100 gallons per minute against 30,078 for the next one. Yields above 3,000 gpm (136 wells, 0.045%) and depths beyond 5,000 ft (103 wells, 0.016%) are kept in the file, marked, and left out of the medians.
Drilling a well in Cass County?
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.
Counties with a comparable number of reports
A sliding window, not a ranking. Every county.