Montana water data · Zip Code in Madison County
ZIP 59749: well depth, groundwater and water rights
What the public record says about water in ZIP code 59749: 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 2,966 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
980
4.1 per sq mi
Median well depth
69 ft
half of wells 45–126 ft
Median static water level
20 ft
905 measurements
Median tested yield
20 gpm
889 pump tests
Well depth
How deep are wells in ZIP 59749?
Of 963 wells with a recorded total depth, the median is 69 feet. Half were drilled between 45 and 126 feet; one in ten went deeper than 200 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
20 ft
median depth to water at rest · half between 11 and 42 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 15 and 30 gpm
3% of tested wells produced under 5 gallons per minute and 60% 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 59749
156 wells have been completed here since 2016, 11 of them in the last twelve months. The newest log on file was completed June 3, 2026. Records run back to 1863.
What the wells are for
- Domestic778
- Stockwater184
- Irrigation84
- Public Water Supply13
- Monitoring7
How they were drilled
- Rotary333
- Cable157
- Dual Rotary143
- Air Rotary35
Drillers filing well logs in ZIP 59749
- Graham Drilling Inc101 since 2016 · 2025
- Ak Drilling, Inc.17 since 2016 · 2021
- Ak Drilling Inc11 since 2016 · 2020
- Graham Drilling & Pumps7 since 2016 · 2026
- Okeefe Drilling Co6 since 2016 · 2025
- Excel Pump And Well Inc.5 since 2016 · 2025
- Red Tiger Drilling4 since 2016 · 2024
- Lindsay Drilling Co Inc1 since 2016 · 2018
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 59749
Montana DNRC lists 1,974 water rights with a point of diversion inside this area: 1,044 groundwater and 930 surface water, 1,784 of them active. The median priority date is 1940, and the oldest claim dates to 1856.
Types of right
- Statement Of Claim1,141
- Ground Water Certificate742
- Provisional Permit54
- Exempt Notice22
- Water Reservation4
Purposes
- Irrigation569
- Stock508
- Domestic311
- Domestic; Lawn And Garden125
- Mining60
DNRC basins
- 41C1,967
- 41F3
- 41G2
- 41H1
- 41B1
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 59749 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 Undifferentiated63 wells · 32% · median 61 ft
- Sand And Gravel (tertiary)34 wells · 17% · median 100 ft
- Gneiss And Schist (early Proterozoic Or Archean)34 wells · 17% · median 200 ft
- Sand And Gravel (pleistocene)19 wells · 10% · median 41 ft
- Sediments (tertiary)15 wells · 8% · median 101 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 59749
Petroleum releases
3
1 open · 2 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
9
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.