Montana water data · Community in Cascade County
Malmstrom AFB: well depth, groundwater and water rights
What the public record says about water in Malmstrom AFB: 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 216 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA SEMS, US Census (place boundary)
Wells on record
188
36.8 per sq mi
Median well depth
22 ft
half of wells 18–36 ft
Median static water level
7 ft
58 measurements
Median tested yield
20 gpm
6 pump tests
Well depth
How deep are wells in Malmstrom AFB?
Of 108 wells with a recorded total depth, the median is 22 feet. Half were drilled between 18 and 36 feet; one in ten went deeper than 41 feet and one in ten found water shallower than 16 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
7 ft
median depth to water at rest · half between 0 and 37 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
20 gpm
median tested yield · half between 20 and 20 gpm
0% of tested wells produced under 5 gallons per minute and 100% 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 Malmstrom AFB
80 wells have been completed here since 2016. The newest log on file was completed July 21, 2025. Records run back to 1989.
What the wells are for
- Monitoring166
- Domestic2
How they were drilled
- Solid Stem Auger47
- Dpt23
- Hsa11
- Auger11
Drillers filing well logs in Malmstrom AFB
- Vista Geoscience47 since 2016 · 2023
- Cascade Drilling Lp33 since 2016 · 2025
- Crane15 all-time · 2002
- Boland Drilling9 all-time · 2013
- Maxim Technologies8 all-time · 1999
- Okeefe Drilling Co6 all-time · 1998
- Nelson4 all-time · 1990
- Boyles Bros3 all-time · 1989
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 Malmstrom AFB
Montana DNRC lists 2 water rights with a point of diversion inside this area: 2 groundwater and 0 surface water, 1 of them active. The median priority date is 2010, and the oldest claim dates to 2010.
Types of right
- Ground Water Certificate2
Purposes
- Stock1
- Domestic; Lawn And Garden1
DNRC basins
- 41Q1
- 41QJ1
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.
Environmental groundwater screening
Documented environmental sites in Malmstrom AFB
Petroleum releases
24
8 open · 16 resolved
Superfund program sites
2
none on the National Priorities List
Registered tank facilities
0
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 2012. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.