Montana water data · Zip Code in Roosevelt County
ZIP 59226: well depth, groundwater and water rights
What the public record says about water in ZIP code 59226: 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 960 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
578
1.8 per sq mi
Median well depth
48 ft
half of wells 28–125 ft
Median static water level
38 ft
275 measurements
Median tested yield
10 gpm
269 pump tests
Well depth
How deep are wells in ZIP 59226?
Of 560 wells with a recorded total depth, the median is 48 feet. Half were drilled between 28 and 125 feet; one in ten went deeper than 200 feet and one in ten found water shallower than 18 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
38 ft
median depth to water at rest · half between 18 and 75 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
10 gpm
median tested yield · half between 5 and 20 gpm
13% of tested wells produced under 5 gallons per minute and 25% 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 59226
28 wells have been completed here since 2016, 3 of them in the last twelve months. The newest log on file was completed June 3, 2026. Records run back to 1902.
What the wells are for
- Monitoring249
- Stockwater194
- Domestic122
- Irrigation27
- Test Well21
How they were drilled
- Rotary127
- Solid Stem Auger50
- Forward Rotary33
- Bored18
Drillers filing well logs in ZIP 59226
- Montana Salinity Control Association22 since 2016 · 2021
- Agri Industries Inc3 since 2016 · 2018
- Badger Drilling & Well Service Llc3 since 2016 · 2026
- Mark Adair Drilling12 all-time · 2012
- Scott Brown10 all-time · 2005
- Boyce Drilling9 all-time · 1998
- E.c. Gendron6 all-time · 1977
- Mt Bureau Of Mines & Geology5 all-time · 1984
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 59226
Montana DNRC lists 365 water rights with a point of diversion inside this area: 211 groundwater and 154 surface water, 325 of them active. The median priority date is 1951, and the oldest claim dates to 1888.
Types of right
- Statement Of Claim163
- Ground Water Certificate101
- Reserved Claim63
- Stockwater Permit13
- Provisional Permit12
Purposes
- Stock189
- Domestic54
- Irrigation53
- Domestic; Stock18
- Fish And Wildlife16
DNRC basins
- 40R349
- 40S16
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 59226 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.
- Fort Union Formation101 wells · 46% · median 139 ft
- Glacial Outwash (pleistocene)42 wells · 19% · median 50 ft
- Alluvium (pleistocene)23 wells · 10% · median 180 ft
- Glacial Drift20 wells · 9% · median 35 ft
- Sand And Gravel (pleistocene)15 wells · 7% · median 70 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 59226
Petroleum releases
7
0 open · 7 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
10
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 2021. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.