⟁ Montana Well Data field records · 2026 survey

Montana Well Data › Fallon County

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

✓ 1,840 GWIC records · verified 2026-06-10

180 ftmedian well depth
81 ft–400 fttypical depth range
70 ftmedian static water level
10 gpmmedian yield (1,461 tests)

How deep are wells in Fallon County, Montana?

The median drilled well depth in Fallon County is 180 ft, based on 1,762 wells with recorded depths in the state GWIC database. Half of all wells fall between 81 ft and 400 ft; 90% are shallower than 800 ft. Wells drilled since 2016 have a median depth of 190 ft.

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

Applying published per-foot rates to the local median depth of 190 ft: drilling and casing alone typically runs $4,750–$12,350; a complete system including pump, pressure tank, and hookup typically runs $11,400–$20,900. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Fallon County?

The median static water level is 70 ft below ground surface (middle half of wells: 30 ft–120 ft), from 1,271 measurements.

How much water do wells in Fallon County produce?

The median tested yield is 10 gpm (middle half: 5 gpm–15 gpm), from 1,461 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 280 50–100 ft 199 100–150 ft 244 150–200 ft 206 200–300 ft 245 300–400 ft 132 400–600 ft 135 600+ ft 321

Who drills wells in Fallon County?

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

Drilling companyWells since 2016
ASKIN DRILLING80
HIGGINS DRILLING COMPANY38
HAZ TECH DRILLING INC16
MONTANA SALINITY CONTROL ASSOCIATION16
HANSEN ENVIRONMENTAL DRILLING9
H & H DRILLING6
SHARP DRILLING INC4
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.