Montana water data · Zip Code in Jefferson County
ZIP 59634: well depth, groundwater and water rights
What the public record says about water in ZIP code 59634: 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 4,019 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA SEMS, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
2,029
8.1 per sq mi
Median well depth
254 ft
half of wells 160–369 ft
Median static water level
60 ft
1,932 measurements
Median tested yield
20 gpm
1,963 pump tests
Well depth
How deep are wells in ZIP 59634?
Of 1,978 wells with a recorded total depth, the median is 254 feet. Half were drilled between 160 and 369 feet; one in ten went deeper than 517 feet and one in ten found water shallower than 82 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
60 ft
median depth to water at rest · half between 25 and 120 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 10 and 30 gpm
8% of tested wells produced under 5 gallons per minute and 52% 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 59634
361 wells have been completed here since 2016, 14 of them in the last twelve months. The newest log on file was completed August 6, 2026. Records run back to 1870.
What the wells are for
- Domestic1,836
- Public Water Supply55
- Stockwater53
- Irrigation45
- Monitoring30
How they were drilled
- Rotary1,217
- Air Rotary443
- Forward Rotary48
- Churn47
Drillers filing well logs in ZIP 59634
- A-10 Drilling116 since 2016 · 2026
- H & L Drilling Inc109 since 2016 · 2025
- Lindsay Drilling Co Inc46 since 2016 · 2026
- Aaaa Water Well Drilling Inc36 since 2016 · 2025
- Western Water Wells27 since 2016 · 2025
- Lindsay Drilling Co18 since 2016 · 2026
- Okeefe Drilling Co3 since 2016 · 2025
- Boland Drilling2 since 2016 · 2017
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 59634
Montana DNRC lists 1,974 water rights with a point of diversion inside this area: 1,586 groundwater and 388 surface water, 1,823 of them active. The median priority date is 1994, and the oldest claim dates to 1858.
Types of right
- Ground Water Certificate1,405
- Statement Of Claim476
- Exempt Notice52
- Provisional Permit27
- Water Reservation7
Purposes
- Domestic719
- Domestic; Lawn And Garden417
- Stock309
- Irrigation79
- Domestic; Stock67
DNRC basins
- 41I1,933
- 41E41
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 59634 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.
- Boulder Batholith71 wells · 65% · median 165 ft
- Plutonic Rocks (upper Cretaceous)17 wells · 15% · median 185 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 59634
Petroleum releases
7
2 open · 5 resolved
Superfund program sites
1
1 on or proposed for the NPL
Registered tank facilities
8
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 1993. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.