A-10 Drilling
Recorded as the driller on 2,343 water wells across 21 Montana counties in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC), most in Lewis and Clark County. Well-log records span 1955–2026.
Counties served
Wells drilled by A-10 Drilling, by county, across the full record.
| County | Wells drilled |
|---|---|
| Lewis and Clark County | 1,252 |
| Broadwater County | 520 |
| Jefferson County | 340 |
| Powell County | 52 |
| Meagher County | 46 |
| Gallatin County | 27 |
| Silver Bow County | 22 |
| Madison County | 21 |
| Cascade County | 14 |
| Deer Lodge County | 11 |
| Granite County | 11 |
| Yellowstone County | 11 |
…and 9 more Montana counties.
Well characteristics
Across the wells A-10 Drilling has drilled, the median depth is 162 ft (middle half 113 ft–290 ft), median tested yield 30 gpm, and median static water level 59 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by A-10 Drilling, straight from the public MBMG record:
"Records span 1955–2026" refers to the earliest and latest well logs attributed to this company in the MBMG database — the state digitized older paper logs, so the first date is the oldest record on file, not necessarily the company's founding year.
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