⟁ Montana Well Data field records · 2026 survey

Montana Well Data › Custer County

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

✓ 3,221 GWIC records · verified 2026-06-10

180 ftmedian well depth
80 ft–330 fttypical depth range
60 ftmedian static water level
15 gpmmedian yield (2,746 tests)

How deep are wells in Custer County, Montana?

The median drilled well depth in Custer County is 180 ft, based on 3,105 wells with recorded depths in the state GWIC database. Half of all wells fall between 80 ft and 330 ft; 90% are shallower than 551 ft. Wells drilled since 2016 have a median depth of 227 ft.

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

Applying published per-foot rates to the local median depth of 227 ft: drilling and casing alone typically runs $5,675–$14,755; a complete system including pump, pressure tank, and hookup typically runs $13,620–$24,970. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Custer County?

The median static water level is 60 ft below ground surface (middle half of wells: 20 ft–140 ft), from 2,516 measurements.

How much water do wells in Custer County produce?

The median tested yield is 15 gpm (middle half: 8 gpm–20 gpm), from 2,746 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 609 50–100 ft 271 100–150 ft 414 150–200 ft 373 200–300 ft 518 300–400 ft 316 400–600 ft 326 600+ ft 278

Who drills wells in Custer County?

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

Drilling companyWells since 2016
ASKIN DRILLING261
HIGGINS DRILLING COMPANY88
HAZ TECH DRILLING INC39
WEST CENTRAL ENVIRONMENTAL CONSULTANTS24
OLYMPUS TECHNICAL SERVICES15
SHARP DRILLING INC9
CLAYTON LARSON2
WW DRILLING2

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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.