Montana Well Data › Lake County
Lake County, Montana: well depth, water level & drilling cost
✓ 8,112 GWIC records · verified 2026-10-02
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How deep are wells in Lake County, Montana?
The median drilled well depth in Lake County is 180 ft, based on 7,966 wells with recorded depths in the state GWIC database. Half of all wells fall between 97 ft and 325 ft; 90% are shallower than 480 ft. Wells drilled since 2016 have a median depth of 240 ft.
How much does it cost to drill a well in Lake County?
Applying published per-foot rates to the local median depth of 240 ft: drilling and casing alone typically runs $6,000–$15,600; a complete system including pump, pressure tank, and hookup typically runs $14,400–$24,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Lake County?
The median static water level is 50 ft below ground surface (middle half of wells: 22 ft–103 ft), from 6,916 measurements.
How much water do wells in Lake County produce?
The median tested yield is 25 gpm (middle half: 14 gpm–50 gpm), from 7,238 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Lake County?
Companies by number of wells completed in this county since 2016, per filed well logs.
| Driller | Wells since 2016 |
|---|---|
| ACE DRILLING | 367 |
| OH WELL DRILLING AND PUMP | 239 |
| ALLWEST DRILLING INC | 193 |
| COLDWATER DRILLING AND PUMPS | 81 |
| BILLMAYER DRILLING | 61 |
| JEROMES DRILLING CO | 58 |
| OH WELL DRILLING & PUMP | 52 |
| WEST CENTRAL ENVIRONMENTAL CONSULTANTS | 35 |
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Well records by ZIP code in Lake County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Polson (59860) — 1,730 wells, median 197 ft
- Ronan (59864) — 837 wells, median 160 ft
- Arlee (59821) — 801 wells, median 119 ft
- Saint Ignatius (59865) — 728 wells, median 104 ft
- Pablo (59855) — 685 wells, median 230 ft
- Big Arm (59910) — 676 wells, median 300 ft
- Charlo (59824) — 648 wells, median 215 ft
- Rollins (59931) — 549 wells, median 219 ft
- Dayton (59914) — 264 wells, median 302 ft
- Elmo (59915) — 149 wells, median 300 ft
- Proctor (59929) — 144 wells, median 265 ft
- Ravalli (59863) — 120 wells, median 53 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.