⟁ Montana Well Data field records · 2026 survey

Montana Well Data › Lake County › Big Arm (59910)

Big Arm, MT (59910): well depth, water level & drilling cost

✓ 676 GWIC records · Lake County

300 ftmedian well depth
200 ft–437 fttypical depth range
61 ftmedian static water level
20 gpmmedian yield (614 tests)

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How deep are wells in and around Big Arm (59910), Montana?

The median drilled well depth in and around Big Arm (59910) is 300 ft, based on 664 wells with recorded depths in the state GWIC database. Half fall between 200 ft and 437 ft; 90% are shallower than 608 ft.

How much does it cost to drill a well in and around Big Arm (59910)?

Applying published per-foot rates to the local median depth of 300 ft: drilling and casing alone typically runs $7,500–$19,500; a complete system including pump, pressure tank, and hookup typically runs $18,000–$30,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Big Arm (59910)?

The median static water level is 61 ft below ground surface (middle half of wells: 27 ft–150 ft), from 518 measurements.

Drilled depth distribution

0–50 ft 18 50–100 ft 31 100–150 ft 50 150–200 ft 66 200–300 ft 156 300–400 ft 118 400–600 ft 153 600+ ft 72
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Part of Lake County well records.

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