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Montana water data · Zip Code in Cascade County

ZIP 59485: well depth, groundwater and water rights

What the public record says about water in ZIP code 59485: 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 578 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

282

5 per sq mi

Median well depth

171 ft

half of wells 66–214 ft

Median static water level

19 ft

238 measurements

Median tested yield

25 gpm

242 pump tests

Well depth

How deep are wells in ZIP 59485?

Of 254 wells with a recorded total depth, the median is 171 feet. Half were drilled between 66 and 214 feet; one in ten went deeper than 464 feet and one in ten found water shallower than 27 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.

under 50 ft
18%
50–100 ft
17%
100–200 ft
34%
200–300 ft
18%
300–500 ft
4%
500 ft and deeper
9%

Static water level

19 ft

median depth to water at rest · half between 10 and 30 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

25 gpm

median tested yield · half between 15 and 40 gpm

2% of tested wells produced under 5 gallons per minute and 67% 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 59485

28 wells have been completed here since 2016, 2 of them in the last twelve months. The newest log on file was completed July 6, 2026. Records run back to 1910.

What the wells are for

  • Domestic213
  • Stockwater43
  • Monitoring26
  • Irrigation24
  • Public Water Supply9

How they were drilled

  • Rotary141
  • Cable24
  • Hollow Stem Auger10
  • Auger8

Drillers filing well logs in ZIP 59485

  • Aquasource Drilling Llc12 since 2016 · 2025
  • Boland Drilling5 since 2016 · 2026
  • Pat Byrne Drilling Inc3 since 2016 · 2018
  • Western Water Wells3 since 2016 · 2023
  • Corveau Drilling1 since 2016 · 2018
  • Aquasource Inc Llc1 since 2016 · 2022
  • Byrne60 all-time · 2003
  • Poverty Drilling22 all-time · 2008

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 59485

Montana DNRC lists 288 water rights with a point of diversion inside this area: 233 groundwater and 55 surface water, 271 of them active. The median priority date is 1988, and the oldest claim dates to 1862.

Types of right

  • Ground Water Certificate174
  • Statement Of Claim75
  • Provisional Permit18
  • Exempt Notice14
  • Stockwater Permit4

Purposes

  • Domestic94
  • Stock49
  • Domestic; Lawn And Garden35
  • Domestic; Lawn And Garden; Stock18
  • Lawn And Garden17

DNRC basins

  • 41QJ273
  • 41J12
  • 41K3

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 59485 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.

  • Sand And Gravel (pleistocene)65 wells · 27% · median 194 ft
  • Alluvium (quaternary)47 wells · 19% · median 56 ft
  • Colorado Shale Or Fm. (of Colorado Group)37 wells · 15% · median 140 ft
  • Kootenai Formation26 wells · 11% · median 463 ft
  • Blackleaf Formation (of Colorado Group)13 wells · 5% · median 68 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 59485

Petroleum releases

1

0 open · 1 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

7

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 1996. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.