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Montana water data · Zip Code in Flathead County

ZIP 59920: well depth, groundwater and water rights

What the public record says about water in ZIP code 59920: 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 1,907 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

871

4.7 per sq mi

Median well depth

321 ft

half of wells 184–480 ft

Median static water level

55 ft

768 measurements

Median tested yield

10 gpm

849 pump tests

Well depth

How deep are wells in ZIP 59920?

Of 861 wells with a recorded total depth, the median is 321 feet. Half were drilled between 184 and 480 feet; one in ten went deeper than 680 feet and one in ten found water shallower than 110 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
2%
50–100 ft
6%
100–200 ft
18%
200–300 ft
17%
300–500 ft
32%
500 ft and deeper
24%

Static water level

55 ft

median depth to water at rest · half between 25 and 114 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

10 gpm

median tested yield · half between 5 and 20 gpm

18% of tested wells produced under 5 gallons per minute and 31% 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 59920

206 wells have been completed here since 2016, 21 of them in the last twelve months. The newest log on file was completed August 27, 2026. Records run back to 1906.

What the wells are for

  • Domestic830
  • Stockwater27
  • Irrigation18
  • Fire Protection9
  • Public Water Supply5

How they were drilled

  • Rotary673
  • Forward Rotary83
  • Cable25
  • Air Rotary18

Drillers filing well logs in ZIP 59920

  • Glazier Drilling42 since 2016 · 2024
  • Davis Brothers Drilling34 since 2016 · 2026
  • Chambers Drilling Company30 since 2016 · 2026
  • Billmayer Drilling17 since 2016 · 2025
  • Rm Drilling And Well Services15 since 2016 · 2026
  • Oh Well Drilling And Pump15 since 2016 · 2026
  • Allwest Drilling Inc11 since 2016 · 2024
  • Aquasource Drilling Llc6 since 2016 · 2026

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 59920

Montana DNRC lists 1,031 water rights with a point of diversion inside this area: 824 groundwater and 207 surface water, 980 of them active. The median priority date is 1993, and the oldest claim dates to 1864.

Types of right

  • Ground Water Certificate750
  • Statement Of Claim209
  • Provisional Permit49
  • Exempt Notice21
  • Domestic Allowance2

Purposes

  • Domestic417
  • Domestic; Lawn And Garden169
  • Stock87
  • Domestic; Stock69
  • Irrigation68

DNRC basins

  • 76LJ981
  • 76L50

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 59920 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.

  • Belt Supergroup125 wells · 34% · median 304 ft
  • Ravalli Group106 wells · 29% · median 300 ft
  • Middle Belt Carbonate94 wells · 26% · median 263 ft
  • Alluvium (holocene)18 wells · 5% · median 53 ft
  • Glacial Drift10 wells · 3% · median 96 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 59920

Petroleum releases

1

0 open · 1 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

4

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 1997. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.