Montana water data · City in Big Horn County
Hardin: well depth, groundwater and water rights
What the public record says about water in Hardin: 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 368 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (place boundary)
Wells on record
169
56.8 per sq mi
Median well depth
26 ft
half of wells 20–30 ft
Median static water level
8 ft
97 measurements
Median tested yield
20 gpm
77 pump tests
Well depth
How deep are wells in Hardin?
Of 129 wells with a recorded total depth, the median is 26 feet. Half were drilled between 20 and 30 feet; one in ten went deeper than 36 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
8 ft
median depth to water at rest · half between 6 and 10 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
0% of tested wells produced under 5 gallons per minute and 70% 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 Hardin
22 wells have been completed here since 2016. The newest log on file was completed August 18, 2025. Records run back to 1940.
What the wells are for
- Monitoring82
- Domestic44
- Stockwater11
- Irrigation8
- Other2
How they were drilled
- Cable58
- Hollowstem Auger36
- Direct Push23
- Rotary11
Drillers filing well logs in Hardin
- Haz Tech Drilling Inc13 since 2016 · 2017
- Pioneer Technical Services Inc9 since 2016 · 2024
- Olympus Technical Services6 since 2016 · 2025
- American Drilling & Supply1 since 2016 · 2019
- Big Horn Drilling60 all-time · 1988
- Hansen Environmental Drilling9 all-time · 2002
- Y-environmental8 all-time · 2006
- Sk Geotechnical5 all-time · 2004
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 Hardin
Montana DNRC lists 114 water rights with a point of diversion inside this area: 110 groundwater and 4 surface water, 91 of them active. The median priority date is 1981, and the oldest claim dates to 1868.
Types of right
- Ground Water Certificate87
- Statement Of Claim23
- 62-73 Ground Water Record2
- Provisional Permit1
- Reserved Claim1
Purposes
- Domestic55
- Lawn And Garden16
- Stock9
- Commercial8
- Domestic; Lawn And Garden7
DNRC basins
- 43P114
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 Hardin 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.
- Terrace Deposits (quaternary)32 wells · 91% · median 26 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 Hardin
Petroleum releases
44
15 open · 29 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
41
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 2019. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.