⟁ Montana Well Data field records · 2026 survey

Montana Well Data › Gallatin County

Gallatin County, Montana: well depth, water level & drilling cost

✓ 19,739 GWIC records · verified 2026-08-24

80 ftmedian well depth
55 ft–154 fttypical depth range
27 ftmedian static water level
30 gpmmedian yield (18,302 tests)

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How deep are wells in Gallatin County, Montana?

The median drilled well depth in Gallatin County is 80 ft, based on 19,452 wells with recorded depths in the state GWIC database. Half of all wells fall between 55 ft and 154 ft; 90% are shallower than 280 ft. Wells drilled since 2016 have a median depth of 105 ft.

How much does it cost to drill a well in Gallatin County?

Applying published per-foot rates to the local median depth of 105 ft: drilling and casing alone typically runs $2,625–$6,825; a complete system including pump, pressure tank, and hookup typically runs $6,300–$10,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Gallatin County?

The median static water level is 27 ft below ground surface (middle half of wells: 12 ft–60 ft), from 18,612 measurements.

How much water do wells in Gallatin County produce?

The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 18,302 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 4,161 50–100 ft 7,044 100–150 ft 3,239 150–200 ft 1,537 200–300 ft 1,750 300–400 ft 783 400–600 ft 676 600+ ft 262

Who drills wells in Gallatin County?

Companies by number of wells completed in this county since 2016, per filed well logs.

DrillerWells since 2016
POTTS DRILLING INC766
VAN DYKEN DRILLING INC567
RED TIGER DRILLING493
BRIDGER DRILLING INC475
DIAMOND M DRILLING INC294
OKEEFE DRILLING CO96
OLD TOWN DRILLING61
WESTERN WATER WELLS57

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Method: medians computed from GWIC records (site type WELL, non-abandoned; depths 0–5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.