Montana water data · Zip Code in Flathead County
ZIP 59901: well depth, groundwater and water rights
What the public record says about water in ZIP code 59901: how deep wells go, where the water table sits, what wells produce, which water rights are on file, and which documented environmental sites are nearby. Area statistics orient you; a property report analyzes the records around one specific parcel.
Updated September 2026 · Based on 18,290 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA SEMS, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
9,411
20.1 per sq mi
Median well depth
182 ft
half of wells 74–280 ft
Median static water level
46 ft
7,953 measurements
Median tested yield
30 gpm
8,231 pump tests
Well depth
How deep are wells in ZIP 59901?
Of 8,914 wells with a recorded total depth, the median is 182 feet. Half were drilled between 74 and 280 feet; one in ten went deeper than 441 feet and one in ten found water shallower than 25 feet. Depth is set by local geology and position on the landscape, both of which change over short distances, so the spread matters as much as the median.
Static water level
46 ft
median depth to water at rest · half between 14 and 108 ft
The static level is how far below ground the water stands before pumping, measured by the driller at completion. It affects pump setting and operating cost, and it moves with season and with neighbouring use.
Well yield
30 gpm
median tested yield · half between 15 and 50 gpm
3% of tested wells produced under 5 gallons per minute and 71% produced 20 or more. These are short completion tests, not sustained-capacity tests; a household typically needs 3 to 5 gpm with storage.
Drilling activity
Recent well drilling in ZIP 59901
1,498 wells have been completed here since 2016, 139 of them in the last twelve months. The newest log on file was completed September 23, 2026. Records run back to 1877.
What the wells are for
- Domestic7,703
- Stockwater630
- Irrigation624
- Monitoring378
- Public Water Supply302
How they were drilled
- Rotary4,281
- Cable1,140
- Forward Rotary775
- Air Rotary343
Drillers filing well logs in ZIP 59901
- Davis Brothers Drilling159 since 2016 · 2026
- Billmayer Drilling154 since 2016 · 2026
- Allwest Drilling Inc149 since 2016 · 2025
- Glazier Drilling141 since 2016 · 2026
- Coldwater Drilling And Pumps135 since 2016 · 2026
- Oh Well Drilling And Pump129 since 2016 · 2026
- Chambers Drilling Company125 since 2016 · 2026
- Okeefe Drilling Co93 since 2016 · 2026
Ranked by well logs filed with GWIC, public record only. Not an endorsement, a referral or a paid listing; we have no business relationship with these companies. Verify licensing with the Montana Board of Water Well Contractors before hiring.
Water rights
Water rights on file in ZIP 59901
Montana DNRC lists 8,564 water rights with a point of diversion inside this area: 7,277 groundwater and 1,287 surface water, 8,003 of them active. The median priority date is 1989, and the oldest claim dates to 1864.
Types of right
- Ground Water Certificate6,068
- Statement Of Claim1,659
- Provisional Permit594
- Exempt Notice225
- 62-73 Ground Water Record14
Purposes
- Domestic2,850
- Domestic; Lawn And Garden1,519
- Irrigation862
- Domestic; Stock479
- Domestic; Lawn And Garden; Stock391
DNRC basins
- 76LJ8,561
- 76K3
Area totals describe the neighbourhood, not any one parcel. Montana publishes no authoritative link between a parcel and a water right; whether a right attaches to a specific property is a property-level question that our reports answer with the DNRC abstract linked.
Aquifers and geology
What wells in ZIP 59901 draw from
Drillers record the aquifer a well is completed in. The units below account for the wells here that carry an aquifer assignment; the median depth beside each is for wells completed in that unit.
- Alluvium (pleistocene)1,879 wells · 36% · median 200 ft
- Alluvium (holocene)1,525 wells · 29% · median 25 ft
- Glacial Drift547 wells · 10% · median 120 ft
- Ravalli Group388 wells · 7% · median 270 ft
- Middle Belt Carbonate370 wells · 7% · median 261 ft
Aquifer assignments are the driller's, recorded at completion, and many older logs carry none. Absence of an assignment is not evidence about the geology.
Environmental groundwater screening
Documented environmental sites in ZIP 59901
Petroleum releases
145
34 open · 111 resolved
Superfund program sites
3
none on the National Priorities List
Registered tank facilities
167
underground storage tanks, current and historical
A documented release or site in the area is not evidence that any particular well is affected. Whether a release reaches a well depends on groundwater flow direction, geology, well depth and construction, the extent of the plume and the cleanup performed. The most recent release reported here dates to 2022. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.