⟁ Montana Well Data field records · 2026 survey

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A-1 Drilling/Billings Drilling

Recorded as the driller on 804 water wells across 16Montanacounties in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC), most in Yellowstone County. Well-log records span 1980–2025.

804wells on record
1since 2022
16counties served
39 ftmedian depth

Counties served

Wells drilled by A-1 Drilling/Billings Drilling, by county, across the full record.

CountyWells drilled
Yellowstone County498
Stillwater County198
Carbon County45
Sweet Grass County25
Big Horn County9
Musselshell County6
Golden Valley County6
Park County4
Jefferson County3
Gallatin County2
Meagher County2
Fergus County2
Show all 16counties
Treasure County1
Broadwater County1
Wheatland County1
Petroleum County1

Well characteristics

Across the wells A-1 Drilling/Billings Drilling has drilled, the median depth is 39 ft (middle half 29 ft–82 ft), median tested yield 48 gpm, and median static water level 14 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-1 Drilling/Billings Drilling, straight from the public MBMG record:

"Records span 1980–2025" 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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