Montana water data · Zip Code in Judith Basin County
ZIP 59479: well depth, groundwater and water rights
What the public record says about water in ZIP code 59479: 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 2,268 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
644
1 per sq mi
Median well depth
123 ft
half of wells 43–335 ft
Median static water level
20 ft
439 measurements
Median tested yield
15 gpm
533 pump tests
Well depth
How deep are wells in ZIP 59479?
Of 617 wells with a recorded total depth, the median is 123 feet. Half were drilled between 43 and 335 feet; one in ten went deeper than 710 feet and one in ten found water shallower than 20 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
20 ft
median depth to water at rest · half between 7 and 32 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
15 gpm
median tested yield · half between 8 and 25 gpm
12% of tested wells produced under 5 gallons per minute and 42% 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 59479
67 wells have been completed here since 2016, 1 of them in the last twelve months. The newest log on file was completed November 10, 2025. Records run back to 1882.
What the wells are for
- Stockwater357
- Domestic248
- Irrigation65
- Monitoring39
- Public Water Supply13
How they were drilled
- Rotary268
- Forward Rotary61
- Hand Dug13
- Unknown9
Drillers filing well logs in ZIP 59479
- Central Drilling Inc34 since 2016 · 2025
- Aquasource Drilling Llc7 since 2016 · 2025
- Yellow Jacket Drilling Services Llc7 since 2016 · 2024
- Olympus Technical Services6 since 2016 · 2022
- Haz Tech Drilling Inc5 since 2016 · 2022
- Mt Dept Of Transportation3 since 2016 · 2023
- Singley Drilling1 since 2016 · 2018
- Thatcher Drilling Co118 all-time · 1990
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 59479
Montana DNRC lists 1,590 water rights with a point of diversion inside this area: 875 groundwater and 715 surface water, 1,478 of them active. The median priority date is 1943, and the oldest claim dates to 1870.
Types of right
- Statement Of Claim1,164
- Ground Water Certificate328
- Provisional Permit39
- Stockwater Permit30
- Exempt Notice16
Purposes
- Stock1,033
- Irrigation218
- Domestic151
- Domestic; Stock24
- Mining21
DNRC basins
- 41S1,401
- 41R171
- 41Q15
- 40A2
- 41J1
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 59479 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.
- Kootenai Formation38 wells · 48% · median 712 ft
- Colorado Shale Or Fm. (of Colorado Group)22 wells · 28% · median 196 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 59479
Petroleum releases
8
1 open · 7 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
26
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 2000. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.