⟁ Montana Well Data field records · 2026 survey

Montana Well Data › Yellowstone County

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

✓ 15,354 GWIC records · verified 2026-06-10

35 ftmedian well depth
25 ft–78 fttypical depth range
15 ftmedian static water level
24 gpmmedian yield (12,350 tests)

How deep are wells in Yellowstone County, Montana?

The median drilled well depth in Yellowstone County is 35 ft, based on 15,013 wells with recorded depths in the state GWIC database. Half of all wells fall between 25 ft and 78 ft; 90% are shallower than 190 ft. Wells drilled since 2016 have a median depth of 33 ft.

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

Applying published per-foot rates to the local median depth of 33 ft: drilling and casing alone typically runs $825–$2,145; a complete system including pump, pressure tank, and hookup typically runs $1,980–$3,630. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Yellowstone County?

The median static water level is 15 ft below ground surface (middle half of wells: 10 ft–27 ft), from 13,620 measurements.

How much water do wells in Yellowstone County produce?

The median tested yield is 24 gpm (middle half: 12 gpm–35 gpm), from 12,350 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 9,554 50–100 ft 2,436 100–150 ft 990 150–200 ft 589 200–300 ft 734 300–400 ft 327 400–600 ft 268 600+ ft 115

Who drills wells in Yellowstone County?

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

Drilling companyWells since 2016
AMERICAN DRILLING & SUPPLY608
BERTRAM DRILLING INC324
AAQUA DRILLING INC292
HAZ TECH DRILLING INC210
MAYES DRILLING INC164
A-1 DRILLING160
CASCADE DRILLING LP136
GARY'S DRILLING INC.70

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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.