Graham Drilling Inc.
Recorded as the driller on 3,141 water wells across 12 Montana counties in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC), most in Madison County. Well-log records span 1868–2025.
Counties served
Wells drilled by Graham Drilling Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Madison County | 1,830 |
| Beaverhead County | 1,153 |
| Jefferson County | 110 |
| Silver Bow County | 20 |
| Gallatin County | 10 |
| Deer Lodge County | 3 |
| Flathead County | 2 |
| Park County | 2 |
| Meagher County | 1 |
| Powell County | 1 |
| Stillwater County | 1 |
| Yellowstone County | 1 |
Well characteristics
Across the wells Graham Drilling Inc. has drilled, the median depth is 100 ft (middle half 60 ft–190 ft), median tested yield 25 gpm, and median static water level 36 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Graham Drilling Inc., straight from the public MBMG record:
"Records span 1868–2025" 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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