Montana Well Data field records · 2026 survey

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MT Dept OF Transportation

Recorded as the driller on 5,869 water wells across 56 Montana counties in Montana Bureau of Mines and Geology Ground Water Information Center (GWIC), most in Fergus County. Well-log records span 1942–2023.

5,869wells on record
4since 2022
56counties served
22 ftmedian depth

Counties served

Wells drilled by MT Dept OF Transportation, by county, across the full record.

CountyWells drilled
Fergus County 320
Lincoln County 313
Jefferson County 248
Meagher County 229
Cascade County 209
Sanders County 205
Broadwater County 201
Rosebud County 192
Phillips County 191
Teton County 182
Lewis and Clark County 172
Missoula County 167
Show all 56 counties
Flathead County 153
Gallatin County 151
Glacier County 149
Roosevelt County 147
Powder River County 144
Silver Bow County 144
Madison County 139
Beaverhead County 131
Blaine County 125
Fallon County 125
Judith Basin County 120
Carbon County 102
Big Horn County 92
Sheridan County 88
Toole County 86
Musselshell County 85
Ravalli County 85
Valley County 84
Wheatland County 84
Lake County 76
Yellowstone County 76
Mineral County 75
Custer County 68
Park County 63
Prairie County 62
Garfield County 61
Hill County 48
Liberty County 47
Mccone County 41
Granite County 39
Treasure County 39
Golden Valley County 38
Daniels County 36
Dawson County 36
Deer Lodge County 35
Pondera County 33
Stillwater County 30
Richland County 29
Powell County 25
Chouteau County 17
Carter County 15
Sweet Grass County 12
Wibaux County 3
Petroleum County 2

Well characteristics

Across the wells MT Dept OF Transportation has drilled, the median depth is 22 ft (middle half 16 ft–41 ft), median tested yield 10 gpm, and median static water level 10 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by MT Dept OF Transportation, straight from the public MBMG record:

"Records span 1942–2023" 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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