⟁ Montana Well Data field records · 2026 survey

Montana Well Data › Gallatin County

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

✓ 19,678 GWIC records · verified 2026-06-10

80 ftmedian well depth
55 ft–154 fttypical depth range
27 ftmedian static water level
30 gpmmedian yield (18,253 tests)

How deep are wells in Gallatin County, Montana?

The median drilled well depth in Gallatin County is 80 ft, based on 19,391 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–$11,550. 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 18,565 measurements.

How much water do wells in Gallatin County produce?

The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 18,253 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 4,152 50–100 ft 7,030 100–150 ft 3,223 150–200 ft 1,531 200–300 ft 1,745 300–400 ft 781 400–600 ft 670 600+ ft 259

Who drills wells in Gallatin County?

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

Drilling companyWells since 2016
POTTS DRILLING INC749
VAN DYKEN DRILLING INC556
RED TIGER DRILLING489
BRIDGER DRILLING INC472
DIAMOND M DRILLING INC290
OKEEFE DRILLING CO78
OLD TOWN DRILLING61
WESTERN WATER WELLS52

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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 2026-06-10) to the local median depth — full methodology & sources.