Montana water data · Zip Code in Madison County
ZIP 59751: well depth, groundwater and water rights
What the public record says about water in ZIP code 59751: 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 465 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
161
6 per sq mi
Median well depth
71 ft
half of wells 52–100 ft
Median static water level
17 ft
144 measurements
Median tested yield
20 gpm
140 pump tests
Well depth
How deep are wells in ZIP 59751?
Of 157 wells with a recorded total depth, the median is 71 feet. Half were drilled between 52 and 100 feet; one in ten went deeper than 149 feet and one in ten found water shallower than 33 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
17 ft
median depth to water at rest · half between 7 and 35 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 12 and 30 gpm
1% 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 59751
24 wells have been completed here since 2016. The newest log on file was completed April 23, 2025. Records run back to 1873.
What the wells are for
- Domestic131
- Stockwater22
- Monitoring7
- Public Water Supply3
- Irrigation2
How they were drilled
- Cable43
- Rotary36
- Dual Rotary16
- Churn15
Drillers filing well logs in ZIP 59751
- Graham Drilling Inc13 since 2016 · 2024
- Okeefe Drilling Co6 since 2016 · 2023
- Barrus Drilling And Pump Co5 all-time · 1970
- Tri Valley4 all-time · 1989
- Beaverhead3 all-time · 2000
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 59751
Montana DNRC lists 301 water rights with a point of diversion inside this area: 169 groundwater and 132 surface water, 274 of them active. The median priority date is 1961, and the oldest claim dates to 1858.
Types of right
- Statement Of Claim167
- Ground Water Certificate119
- Provisional Permit5
- Exempt Notice5
- 62-73 Ground Water Record2
Purposes
- Irrigation97
- Stock64
- Domestic56
- Domestic; Lawn And Garden24
- Domestic; Stock8
DNRC basins
- 41G299
- 41D1
- 41C1
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 59751 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.
- Cenozoic Undifferentiated29 wells · 48% · median 63 ft
- Sand And Gravel (holocene)8 wells · 13% · median 51 ft
- Sediments (tertiary)7 wells · 11% · median 71 ft
- Gneiss And Schist (early Proterozoic Or Archean)5 wells · 8% · median 420 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 59751
Petroleum releases
1
0 open · 1 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
2
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 1994. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.