Montana Well Data › Gallatin County
Gallatin County, Montana: well depth, water level & drilling cost
✓ 19,771 GWIC records · verified 2026-10-02
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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 19,484 wells with recorded depths in the state GWIC database. Half of all wells fall between 55 ft and 155 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 18,644 measurements.
How much water do wells in Gallatin County produce?
The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 18,331 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Gallatin County?
Companies by number of wells completed in this county since 2016, per filed well logs.
| Driller | Wells since 2016 |
|---|---|
| POTTS DRILLING INC | 774 |
| VAN DYKEN DRILLING INC | 570 |
| RED TIGER DRILLING | 499 |
| BRIDGER DRILLING INC | 476 |
| DIAMOND M DRILLING INC | 299 |
| OKEEFE DRILLING CO | 96 |
| OLD TOWN DRILLING | 61 |
| WESTERN WATER WELLS | 59 |
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Well records by ZIP code in Gallatin County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Belgrade (59714) — 3,076 wells, median 80 ft
- Bozeman (59715) — 2,809 wells, median 60 ft
- Bozeman (59772) — 2,805 wells, median 86 ft
- Bozeman (59718) — 2,453 wells, median 60 ft
- Bozeman (59771) — 2,348 wells, median 80 ft
- Manhattan (59741) — 2,087 wells, median 78 ft
- Bozeman (59717) — 1,476 wells, median 175 ft
- Big Sky (59716) — 1,147 wells, median 241 ft
- West Yellowstone (59758) — 887 wells, median 104 ft
- Willow Creek (59760) — 497 wells, median 80 ft
- Gallatin Gateway (59730) — 362 wells, median 65 ft
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.