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Montana water data · Zip Code in Liberty County

ZIP 59531: well depth, groundwater and water rights

What the public record says about water in ZIP code 59531: 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 713 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

374

1.4 per sq mi

Median well depth

35 ft

half of wells 23–110 ft

Median static water level

42 ft

128 measurements

Median tested yield

8 gpm

123 pump tests

Well depth

How deep are wells in ZIP 59531?

Of 356 wells with a recorded total depth, the median is 35 feet. Half were drilled between 23 and 110 feet; one in ten went deeper than 200 feet and one in ten found water shallower than 18 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
65%
50–100 ft
8%
100–200 ft
15%
200–300 ft
8%
300–500 ft
3%
500 ft and deeper
2%

Static water level

42 ft

median depth to water at rest · half between 16 and 100 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

8 gpm

median tested yield · half between 5 and 14 gpm

19% of tested wells produced under 5 gallons per minute and 18% 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 59531

0 wells have been completed here since 2016. The newest log on file was completed May 3, 2013. Records run back to 1910.

What the wells are for

  • Monitoring195
  • Domestic104
  • Stockwater98
  • Irrigation9
  • Unused4

How they were drilled

  • Unknown55
  • Cable11
  • Hollowstem Auger11
  • Rotary8

Drillers filing well logs in ZIP 59531

  • Montana Salinity Control Association71 all-time · 2008
  • Sb And Rg21 all-time · 2003
  • Hi-line Drilling Inc17 all-time · 2011
  • Sb Rl14 all-time · 2000
  • Rl Sb Scb12 all-time · 1998
  • Unknown11 all-time · 1958
  • Rl & Sb7 all-time · 2000
  • Sb & Rl7 all-time · 2000

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 59531

Montana DNRC lists 330 water rights with a point of diversion inside this area: 114 groundwater and 216 surface water, 312 of them active. The median priority date is 1949, and the oldest claim dates to 1895.

Types of right

  • Statement Of Claim281
  • Ground Water Certificate19
  • Stockwater Permit18
  • Provisional Permit11
  • Exempt Notice1

Purposes

  • Stock216
  • Domestic50
  • Irrigation36
  • Multiple Domestic6
  • Fish And Wildlife5

DNRC basins

  • 40G265
  • 41P44
  • 40F21

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 59531 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.

  • Judith River Formation (of Montana Group)27 wells · 52% · median 140 ft
  • Glacial Drift10 wells · 19% · median 58 ft
  • Alluvium (quaternary)6 wells · 12% · median 13 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 59531

Petroleum releases

4

0 open · 4 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

5

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 1998. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.