Montana water data · Community in Jefferson County
Clancy: well depth, groundwater and water rights
What the public record says about water in Clancy: 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 November 2026 · Based on 1,168 public records from MBMG GWIC, Montana DNRC, EPA UST Finder, US Census (place boundary)
Wells on record
598
15.3 per sq mi
Median well depth
208 ft
half of wells 116–340 ft
Median static water level
30 ft
553 measurements
Median tested yield
20 gpm
568 pump tests
Well depth
How deep are wells in Clancy?
Of 567 wells with a recorded total depth, the median is 208 feet. Half were drilled between 116 and 340 feet; one in ten went deeper than 460 feet and one in ten found water shallower than 40 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
30 ft
median depth to water at rest · half between 15 and 60 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
6% of tested wells produced under 5 gallons per minute and 51% 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 Clancy
93 wells have been completed here since 2016, 5 of them in the last twelve months. The newest log on file was completed June 25, 2026. Records run back to 1870.
What the wells are for
- Domestic539
- Irrigation22
- Public Water Supply20
- Stockwater16
- Monitoring5
How they were drilled
- Rotary285
- Air Rotary175
- Cable26
- Churn13
Drillers filing well logs in Clancy
- A-10 Drilling36 since 2016 · 2026
- H & L Drilling Inc23 since 2016 · 2025
- Lindsay Drilling Co Inc14 since 2016 · 2025
- Aaaa Water Well Drilling Inc10 since 2016 · 2024
- Lindsay Drilling Co7 since 2016 · 2026
- Lindsay Drilling80 all-time · 2012
- Treasure State Drilling10 all-time · 2006
- Murrays Well Service9 all-time · 2007
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 Clancy
Montana DNRC lists 568 water rights with a point of diversion inside this area: 466 groundwater and 102 surface water, 532 of them active. The median priority date is 1990, and the oldest claim dates to 1858.
Types of right
- Ground Water Certificate392
- Statement Of Claim142
- Exempt Notice19
- Provisional Permit12
- Reserved Claim2
Purposes
- Domestic226
- Domestic; Lawn And Garden103
- Stock82
- Irrigation33
- Domestic; Lawn And Garden; Stock16
DNRC basins
- 41I568
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 Clancy 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 Batholith24 wells · 71% · median 125 ft
- Plutonic Rocks (upper Cretaceous)7 wells · 21% · median 85 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 Clancy
Petroleum releases
0
0 open · 0 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. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.