Montana county well data
Fallon County well depths
We analyzed 1,860 well records with recorded depths in Fallon County from the Montana Ground Water Information Center. The median well is 175 feet deep, and most fall between 80 and 390 feet.
- 3,193
- Well records analyzed
- 1,860
- With recorded depth
- 175 ft
- Median depth
- 80–390 ft
- Typical range (25th–75th)
- 31.5–800 ft
- 10th–90th percentile
- 5 ft
- Shallowest recorded
- 1,755 ft
- Deepest recorded
- 10 GPM
- Median reported yield
What these numbers mean if you are buying here
A county median is a useful orientation, not a prediction for a specific property. Well depth in Montana is driven by local geology and topographic position, and both change over short distances — particularly at the edges of the intermontane basins, where unconsolidated basin fill gives way to bedrock. Two parcels a mile apart in Fallon County can require very different wells.
The spread here shows that directly. While the median is 175 feet, recorded depths run from 5 to 1,755 feet. That range is why our property reports select comparable wells around the specific parcel and weight them by geology rather than quoting a county average.
The median reported yield in Fallon County is 10 GPM. Bear in mind these are short drilling-test measurements taken at completion, not sustained-capacity tests, so treat them as an indication of what drillers encountered rather than a guarantee of long-term supply.
Static water level — the depth at which water stands before pumping — has a median of 68 feet across 1,291 records in the county. This affects pump setting and operating cost.
We have indexed 3,946 water-right records associated with Fallon County from Montana DNRC. Whether any of them attach to a particular parcel is a property-specific question — Montana publishes no authoritative parcel-to-water-right link, which is why our reports label these as potential associations and link you to the original DNRC abstract.
Drillers filing well logs in Fallon County
- Askin Drilling76 in 10 yrs · 2026
- Higgins Drilling Company38 in 10 yrs · 2026
- Montana Salinity Control Association18 in 10 yrs · 2025
- Haz Tech Drilling Inc16 in 10 yrs · 2021
- H & H Drilling6 in 10 yrs · 2022
- Sharp Drilling Inc4 in 10 yrs · 2022
- Hansen Environmental Drilling4 in 10 yrs · 2019
- Y-environmental4 in 10 yrs · 2017
From well logs filed with GWIC — public record, not an endorsement or referral. We have no business relationship with these companies. Verify licensing with the Montana Board of Water Well Contractors before hiring.
Check a specific property
County statistics are context. A property report analyzes the wells around one parcel.
Compare counties
- Ravalli70 ft · 22,201 wells
- Flathead190 ft · 21,817 wells
- Gallatin80 ft · 19,848 wells
- Lewis And Clark103 ft · 17,204 wells
- Yellowstone35 ft · 15,109 wells
- Missoula100 ft · 15,295 wells
- Lincoln140 ft · 8,434 wells
- Lake180 ft · 8,061 wells
Source: Montana Bureau of Mines and Geology, Ground Water Information Center (GWIC) and Montana Department of Natural Resources and Conservation (DNRC), Water Rights Bureau. Statistics computed September 26, 2026. Abandoned, plugged, and destroyed wells are excluded, as are depths outside a plausible range. See methodology.