Water wells in Rockwall County, Texas
312 well reports on file. The median well here was taken to 25 ft and struck water at 25 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Rockwall County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Tan Clay 31, Black Dirt 28, Concrete 24, Yellow Clay 23, Top Soil 20, Black Clay 20 |
| 25–50 ft | Blue Shale 18, Shale 10, Shale Gray 9, Gray Clay 7, Tan Clay 5, Gray Shale 4 |
| 50–100 ft | Shale 7, Blue Shale 6, Tan Sand 2, Black Clay 2, Gravel 2, Tan Clay 2 |
| 200–300 ft | Shale W/ Small Sand Strks 1, Shale & Limestone 1, Taylor Formation 1 |
| 500–1000 ft | Shale 2, Shale W/ Sand Strks 1, Shale & Limestone 1, Sand W/ Shale & Limestone 1, Austin Chalk 1, Shale W/ Chalk Streaks 1 |
| 1000–5000 ft | Shale 4, Shale & Limestone 1, Shale Lime Streaks 1, Shale And Lime 1, Sand W/ Shale Strks 1, Sand 1 |
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 Rockwall County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 158 | 50.6% | 25 |
| Environmental Soil Boring | 74 | 23.7% | 15 |
| Irrigation | 49 | 15.7% | 55 |
| Closed-Loop Geothermal | 15 | 4.8% | 250 |
| Domestic | 7 | 2.2% | 70 |
| Test Well | 3 | 1.0% | 19 |
| Public Supply | 2 | 0.6% | 3,420 |
| Injection | 2 | 0.6% | — |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 135 | 35 | 25 |
| 2010s | 98 | 26 | 18 |
| 2020s | 79 | 25 | 20 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 661236 | 2023 | 3,420 | — | — | Public Supply |
| 166485 | 2003 | 3,360 | — | — | Irrigation |
| 722594 | 2026 | 3,285 | 635 | 823 | Public Supply |
| 516481 | 2019 | 3,280 | 575 | 500 | Irrigation |
| 506741 | 2019 | 2,475 | — | — | Irrigation |
| 690589 | 2025 | 2,450 | 600 | — | Domestic |
| 503656 | 2019 | 300 | — | — | Closed-Loop Geothermal |
| 572151 | 2021 | 250 | — | — | Closed-Loop Geothermal |
| 123220 | 2007 | 250 | — | — | Closed-Loop Geothermal |
| 123219 | 2007 | 250 | — | — | Closed-Loop Geothermal |
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 Rockwall 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.