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Montana water data · Zip Code in Lewis and Clark County

ZIP 59639: well depth, groundwater and water rights

What the public record says about water in ZIP code 59639: 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 3,377 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

1,512

2.2 per sq mi

Median well depth

52 ft

half of wells 45–91 ft

Median static water level

14 ft

1,205 measurements

Median tested yield

20 gpm

1,148 pump tests

Well depth

How deep are wells in ZIP 59639?

Of 1,297 wells with a recorded total depth, the median is 52 feet. Half were drilled between 45 and 91 feet; one in ten went deeper than 165 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
30%
50–100 ft
47%
100–200 ft
14%
200–300 ft
4%
300–500 ft
2%
500 ft and deeper
3%

Static water level

14 ft

median depth to water at rest · half between 8 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

20 gpm

median tested yield · half between 12 and 25 gpm

5% of tested wells produced under 5 gallons per minute and 52% 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 59639

178 wells have been completed here since 2016, 17 of them in the last twelve months. The newest log on file was completed September 3, 2026. Records run back to 1880.

What the wells are for

  • Domestic993
  • Monitoring404
  • Stockwater46
  • Fire Protection37
  • Irrigation34

How they were drilled

  • Cable383
  • Rotary276
  • Cable Tool270
  • Air Rotary86

Drillers filing well logs in ZIP 59639

  • Mt Poverty Water Well Drilling79 since 2016 · 2022
  • Western Water Wells55 since 2016 · 2026
  • A-10 Drilling20 since 2016 · 2026
  • Aquasource Drilling Llc7 since 2016 · 2025
  • 406 Water Wells, Llc4 since 2016 · 2026
  • Aaaa Water Well Drilling Inc3 since 2016 · 2024
  • Pioneer Technical Services Inc3 since 2016 · 2018
  • Poverty Drilling2 since 2016 · 2019

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 59639

Montana DNRC lists 1,834 water rights with a point of diversion inside this area: 1,182 groundwater and 652 surface water, 1,658 of them active. The median priority date is 1980, and the oldest claim dates to 1864.

Types of right

  • Ground Water Certificate935
  • Statement Of Claim784
  • Exempt Notice43
  • Provisional Permit37
  • Water Reservation18

Purposes

  • Domestic667
  • Stock373
  • Domestic; Lawn And Garden231
  • Irrigation110
  • Mining73

DNRC basins

  • 76F1,731
  • 41QJ95
  • 76J7
  • 41I1

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 59639 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)139 wells · 99% · median 30 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 59639

Petroleum releases

18

2 open · 16 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

13

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 2003. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.