Central Drilling Inc.
Recorded as the driller on 1,101 water wells across 24 Montana counties in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC), most in Fergus County. Well-log records span 1954–2026.
Counties served
Wells drilled by Central Drilling Inc., by county, across the full record.
| County | Wells drilled |
|---|---|
| Fergus County | 711 |
| Judith Basin County | 257 |
| Wheatland County | 35 |
| Petroleum County | 19 |
| Chouteau County | 12 |
| Roosevelt County | 11 |
| Meagher County | 7 |
| Golden Valley County | 6 |
| Cascade County | 5 |
| Rosebud County | 5 |
| Big Horn County | 4 |
| Sweet Grass County | 4 |
…and 12 more Montana counties.
Well characteristics
Across the wells Central Drilling Inc. has drilled, the median depth is 180 ft (middle half 100 ft–320 ft), median tested yield 18 gpm, and median static water level 38 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.
Original drilling logs
Recent well logs filed by Central Drilling Inc., straight from the public MBMG record:
"Records span 1954–2026" 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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