⟁ Montana Well Data field records · 2026 survey

Montana Well Data › Sweet Grass County

Sweet Grass County, Montana: well depth, water level & drilling cost

✓ 2,321 GWIC records · verified 2026-07-27

85 ftmedian well depth
47 ft–160 fttypical depth range
25 ftmedian static water level
20 gpmmedian yield (2,164 tests)

How deep are wells in Sweet Grass County, Montana?

The median drilled well depth in Sweet Grass County is 85 ft, based on 2,271 wells with recorded depths in the state GWIC database. Half of all wells fall between 47 ft and 160 ft; 90% are shallower than 290 ft. Wells drilled since 2016 have a median depth of 130 ft.

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

Applying published per-foot rates to the local median depth of 130 ft: drilling and casing alone typically runs $3,250–$8,450; a complete system including pump, pressure tank, and hookup typically runs $7,800–$13,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Sweet Grass County?

The median static water level is 25 ft below ground surface (middle half of wells: 12 ft–48 ft), from 2,181 measurements.

How much water do wells in Sweet Grass County produce?

The median tested yield is 20 gpm (middle half: 10 gpm–35 gpm), from 2,164 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 588 50–100 ft 663 100–150 ft 364 150–200 ft 213 200–300 ft 226 300–400 ft 127 400–600 ft 70 600+ ft 20

Who drills wells in Sweet Grass County?

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

DrillerWells since 2016
BIRCHELL DRILLING167
THOMPSON DRILLING & PUMP73
AAQUA DRILLING INC20
POTTS DRILLING INC17
A-1 DRILLING8
AMERICAN DRILLING & SUPPLY6
OKEEFE DRILLING CO5
VAN DYKEN DRILLING INC5

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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 2026-06-11) to the local median depth — full methodology & sources.