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Montana water data · Zip Code in Judith Basin County

ZIP 59418: well depth, groundwater and water rights

What the public record says about water in ZIP code 59418: 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 574 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

127

1 per sq mi

Median well depth

104 ft

half of wells 37–331 ft

Median static water level

16 ft

91 measurements

Median tested yield

15 gpm

107 pump tests

Well depth

How deep are wells in ZIP 59418?

Of 120 wells with a recorded total depth, the median is 104 feet. Half were drilled between 37 and 331 feet; one in ten went deeper than 1,230 feet and one in ten found water shallower than 20 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
28%
50–100 ft
17%
100–200 ft
20%
200–300 ft
8%
300–500 ft
7%
500 ft and deeper
21%

Static water level

16 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

15 gpm

median tested yield · half between 6 and 25 gpm

15% of tested wells produced under 5 gallons per minute and 40% 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 59418

13 wells have been completed here since 2016. The newest log on file was completed June 25, 2025. Records run back to 1880.

What the wells are for

  • Stockwater78
  • Domestic52
  • Monitoring11
  • Public Water Supply3
  • Irrigation2

How they were drilled

  • Rotary58
  • Forward Rotary7
  • Hand5
  • Hsa5

Drillers filing well logs in ZIP 59418

  • Central Drilling Inc3 since 2016 · 2024
  • Hydro Resources-rocky Mountain Inc3 since 2016 · 2024
  • Gordon Drilling Inc3 since 2016 · 2018
  • Singley Drilling2 since 2016 · 2025
  • Thatcher Drilling Co11 all-time · 1982
  • Debuff Drilling11 all-time · 1996
  • Terracon10 all-time · 2010
  • Joe Pirrie Water Wells3 all-time · 1976

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 59418

Montana DNRC lists 444 water rights with a point of diversion inside this area: 223 groundwater and 221 surface water, 421 of them active. The median priority date is 1946, and the oldest claim dates to 1880.

Types of right

  • Statement Of Claim329
  • Ground Water Certificate77
  • Provisional Permit17
  • Exempt Notice11
  • Stockwater Permit10

Purposes

  • Stock321
  • Irrigation47
  • Domestic27
  • Domestic; Stock11
  • Domestic; Lawn And Garden; Stock5

DNRC basins

  • 41S444

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 59418 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.

  • Kootenai Formation8 wells · 50% · median 868 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 59418

Petroleum releases

1

0 open · 1 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. The most recent release reported here dates to 1992. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.