Montana water data · City in Wheatland County
Harlowton: well depth, groundwater and water rights
What the public record says about water in Harlowton: 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 175 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (place boundary)
Wells on record
109
174.2 per sq mi
Median well depth
35 ft
half of wells 30–45 ft
Median static water level
23 ft
97 measurements
Median tested yield
35 gpm
17 pump tests
Well depth
How deep are wells in Harlowton?
Of 105 wells with a recorded total depth, the median is 35 feet. Half were drilled between 30 and 45 feet; one in ten went deeper than 108 feet and one in ten found water shallower than 25 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
23 ft
median depth to water at rest · half between 19 and 27 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
35 gpm
median tested yield · half between 20 and 400 gpm
12% of tested wells produced under 5 gallons per minute and 82% 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 Harlowton
16 wells have been completed here since 2016. The newest log on file was completed September 15, 2025. Records run back to 1940.
What the wells are for
- Monitoring91
- Public Water Supply9
- Domestic6
- Stockwater2
- Industrial2
How they were drilled
- Hollowstem Auger88
- Cable5
- Rotary4
- Forward Rotary2
Drillers filing well logs in Harlowton
- Haz Tech Drilling Inc17 since 2016 · 2025
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 Harlowton
Montana DNRC lists 20 water rights with a point of diversion inside this area: 15 groundwater and 5 surface water, 15 of them active. The median priority date is 1974, and the oldest claim dates to 1948.
Types of right
- Ground Water Certificate9
- Statement Of Claim8
- Provisional Permit2
- Exempt Notice1
Purposes
- Domestic8
- Irrigation4
- Municipal3
- Commercial; Domestic1
- Observation And Testing1
DNRC basins
- 40A20
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.
Environmental groundwater screening
Documented environmental sites in Harlowton
Petroleum releases
12
5 open · 7 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
34
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 2014. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.