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Montana water data · Zip Code in Roosevelt County

ZIP 59255: well depth, groundwater and water rights

What the public record says about water in ZIP code 59255: 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 1,944 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA SEMS, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

1,291

1.9 per sq mi

Median well depth

60 ft

half of wells 35–100 ft

Median static water level

31 ft

578 measurements

Median tested yield

12 gpm

503 pump tests

Well depth

How deep are wells in ZIP 59255?

Of 1,180 wells with a recorded total depth, the median is 60 feet. Half were drilled between 35 and 100 feet; one in ten went deeper than 155 feet and one in ten found water shallower than 21 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
41%
50–100 ft
32%
100–200 ft
20%
200–300 ft
4%
300–500 ft
2%
500 ft and deeper
0%

Static water level

31 ft

median depth to water at rest · half between 19 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

12 gpm

median tested yield · half between 7 and 20 gpm

10% of tested wells produced under 5 gallons per minute and 30% 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 59255

102 wells have been completed here since 2016, 5 of them in the last twelve months. The newest log on file was completed April 15, 2026. Records run back to 1910.

What the wells are for

  • Domestic443
  • Monitoring366
  • Stockwater313
  • Unused144
  • Other28

How they were drilled

  • Rotary345
  • Unknown60
  • Solid Stem Auger45
  • Forward Rotary43

Drillers filing well logs in ZIP 59255

  • Montana Salinity Control Association37 since 2016 · 2026
  • Yellow Jacket Drilling Services Llc24 since 2016 · 2024
  • Hansen Environmental Drilling13 since 2016 · 2024
  • Sharp Drilling Inc10 since 2016 · 2023
  • Hansen Drilling5 since 2016 · 2016
  • Agri Industries Inc4 since 2016 · 2025
  • Dls Contracting2 since 2016 · 2016
  • Thermal Drill Inc1 since 2016 · 2021

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 59255

Montana DNRC lists 572 water rights with a point of diversion inside this area: 293 groundwater and 279 surface water, 494 of them active. The median priority date is 1961, and the oldest claim dates to 1887.

Types of right

  • Statement Of Claim363
  • Ground Water Certificate122
  • Provisional Permit38
  • Stockwater Permit19
  • Conservation District Record14

Purposes

  • Stock317
  • Domestic96
  • Irrigation88
  • Domestic; Stock19
  • Domestic; Lawn And Garden8

DNRC basins

  • 40S241
  • 40Q205
  • 40P104
  • 40R22

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 59255 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.

  • Alluvium (quaternary)131 wells · 32% · median 50 ft
  • Fort Union Formation61 wells · 15% · median 112 ft
  • Fox Hills-hell Creek Aquifer46 wells · 11% · median 170 ft
  • Hell Creek Formation38 wells · 9% · median 150 ft
  • Tongue River Member (of Ft Union Fm.)30 wells · 7% · median 54 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 59255

Petroleum releases

20

5 open · 15 resolved

Superfund program sites

1

none on the National Priorities List

Registered tank facilities

60

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.