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Montana water data · Zip Code in Missoula County

ZIP 59823: well depth, groundwater and water rights

What the public record says about water in ZIP code 59823: 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 2,538 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA SEMS, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

919

1.8 per sq mi

Median well depth

140 ft

half of wells 80–260 ft

Median static water level

48 ft

819 measurements

Median tested yield

15 gpm

852 pump tests

Well depth

How deep are wells in ZIP 59823?

Of 901 wells with a recorded total depth, the median is 140 feet. Half were drilled between 80 and 260 feet; one in ten went deeper than 390 feet and one in ten found water shallower than 55 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
8%
50–100 ft
27%
100–200 ft
28%
200–300 ft
18%
300–500 ft
16%
500 ft and deeper
4%

Static water level

48 ft

median depth to water at rest · half between 28 and 91 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 8 and 30 gpm

9% of tested wells produced under 5 gallons per minute and 44% 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 59823

111 wells have been completed here since 2016, 4 of them in the last twelve months. The newest log on file was completed June 11, 2026. Records run back to 1900.

What the wells are for

  • Domestic779
  • Stockwater48
  • Public Water Supply31
  • Monitoring17
  • Irrigation15

How they were drilled

  • Rotary527
  • Forward Rotary130
  • Cable101
  • Churn18

Drillers filing well logs in ZIP 59823

  • Jeromes Drilling Co49 since 2016 · 2025
  • Western Montana Drilling Co.19 since 2016 · 2024
  • Blackfoot Well Drilling & Pump Service Inc13 since 2016 · 2020
  • Camp Well Drilling & Pump Supply9 since 2016 · 2026
  • Camp Well Drilling And Pump Service7 since 2016 · 2025
  • Okeefe Drilling Co5 since 2016 · 2025
  • Western Montana Drilling Company5 since 2016 · 2024
  • Ak Drilling Inc3 since 2016 · 2025

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 59823

Montana DNRC lists 1,605 water rights with a point of diversion inside this area: 689 groundwater and 916 surface water, 1,495 of them active. The median priority date is 1959, and the oldest claim dates to 1858.

Types of right

  • Statement Of Claim931
  • Ground Water Certificate616
  • Provisional Permit30
  • Exempt Notice17
  • Water Reservation3

Purposes

  • Stock502
  • Domestic327
  • Irrigation237
  • Domestic; Lawn And Garden105
  • Fish And Wildlife85

DNRC basins

  • 76F1,555
  • 76M36
  • 76G14

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 59823 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.

  • Sediments (tertiary)277 wells · 40% · median 160 ft
  • Belt Supergroup187 wells · 27% · median 250 ft
  • Alluvium (holocene)118 wells · 17% · median 59 ft
  • Alluvium (pleistocene)89 wells · 13% · median 84 ft
  • Sand And Gravel (tertiary)7 wells · 1% · median 137 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 59823

Petroleum releases

4

1 open · 3 resolved

Superfund program sites

1

none on the National Priorities List

Registered tank facilities

9

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 2023. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.