Montana Well Data › Flathead County

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

Name: Flathead County, Montana water well statistics
Creator: Montana Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 22,069 GWIC records · verified 2026-10-26

192 ftmedian well depth

102 ft–300 fttypical depth range

55 ftmedian static water level

25 gpmmedian yield (20,096 tests)

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How deep are wells in Flathead County, Montana?

The median drilled well depth in Flathead County is 192 ft, based on 21,616 wells with recorded depths in the state GWIC database. Half of all wells fall between 102 ft and 300 ft; 90% are shallower than 448 ft. Wells drilled since 2016 have a median depth of 245 ft.

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

Applying published per-foot rates to the local median depth of 245 ft: drilling and casing alone typically runs $6,125–$15,925; a complete system including pump, pressure tank, and hookup typically runs $14,700–$24,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Flathead County?

The median static water level is 55 ft below ground surface (middle half of wells: 20 ft–105 ft), from 19,543 measurements.

How much water do wells in Flathead County produce?

The median tested yield is 25 gpm (middle half: 15 gpm–45 gpm), from 20,096 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 3,205 50–100 ft 1,911 100–150 ft 2,752 150–200 ft 3,294 200–300 ft 4,961 300–400 ft 2,457 400–600 ft 1,978 600+ ft 1,058

Who drills wells in Flathead County?

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

Driller	Wells since 2016
BILLMAYER DRILLING	513
DAVIS BROTHERS DRILLING	427
GLAZIER DRILLING	398
COLDWATER DRILLING AND PUMPS	382
CHAMBERS DRILLING COMPANY	366
OH WELL DRILLING AND PUMP	348
ALLWEST DRILLING INC	325
RM DRILLING AND WELL SERVICES	267

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Well records by ZIP code in Flathead County

Median depth, water level, and yield for each ZIP code with recorded wells.

Kalispell (59904) — 3,733 wells, median 140 ft
Bigfork (59911) — 3,591 wells, median 167 ft
Columbia Falls (59912) — 3,251 wells, median 165 ft
Whitefish (59937) — 2,832 wells, median 226 ft
Kalispell (59903) — 2,262 wells, median 260 ft
Kalispell (59901) — 2,196 wells, median 147 ft
Somers (59932) — 1,228 wells, median 285 ft
Marion (59925) — 944 wells, median 233 ft
Kila (59920) — 880 wells, median 336 ft
Lakeside (59922) — 697 wells, median 325 ft
Coram (59913) — 484 wells, median 109 ft
Polebridge (59928) — 325 wells, median 119 ft
Olney (59927) — 323 wells, median 196 ft
West Glacier (59936) — 312 wells, median 78 ft
Martin City (59926) — 185 wells, median 119 ft
Hungry Horse (59919) — 159 wells, median 102 ft
Essex (59916) — 135 wells, median 140 ft
Lake Mc Donald (59921) — 77 wells, median 195 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.