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Montana water data · Zip Code in Lincoln County

ZIP 59923: well depth, groundwater and water rights

What the public record says about water in ZIP code 59923: 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 6,599 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA SEMS, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

3,327

2.4 per sq mi

Median well depth

84 ft

half of wells 45–184 ft

Median static water level

31 ft

2,984 measurements

Median tested yield

15 gpm

2,923 pump tests

Well depth

How deep are wells in ZIP 59923?

Of 3,239 wells with a recorded total depth, the median is 84 feet. Half were drilled between 45 and 184 feet; one in ten went deeper than 300 feet and one in ten found water shallower than 32 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
28%
50–100 ft
27%
100–200 ft
21%
200–300 ft
13%
300–500 ft
8%
500 ft and deeper
3%

Static water level

31 ft

median depth to water at rest · half between 17 and 75 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 10 and 25 gpm

7% of tested wells produced under 5 gallons per minute and 38% 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 59923

561 wells have been completed here since 2016, 30 of them in the last twelve months. The newest log on file was completed June 4, 2026. Records run back to 1902.

What the wells are for

  • Domestic2,752
  • Monitoring237
  • Irrigation80
  • Other71
  • Stockwater65

How they were drilled

  • Rotary1,137
  • Cable789
  • Churn226
  • Air Rotary173

Drillers filing well logs in ZIP 59923

  • Universal Drilling209 since 2016 · 2025
  • North West Drilling125 since 2016 · 2026
  • Cascade Drilling Lp70 since 2016 · 2023
  • Davis Brothers Drilling37 since 2016 · 2026
  • Universal Drilling Llc37 since 2016 · 2026
  • Environmental West Exploration29 since 2016 · 2021
  • Post Pump & Drilling Llc14 since 2016 · 2022
  • Oh Well Drilling And Pump13 since 2016 · 2023

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 59923

Montana DNRC lists 3,091 water rights with a point of diversion inside this area: 2,481 groundwater and 610 surface water, 2,896 of them active. The median priority date is 1983, and the oldest claim dates to 1864.

Types of right

  • Ground Water Certificate2,089
  • Statement Of Claim729
  • Provisional Permit137
  • Exempt Notice94
  • Water Reservation19

Purposes

  • Domestic1,454
  • Domestic; Lawn And Garden474
  • Irrigation202
  • Stock186
  • Lawn And Garden83

DNRC basins

  • 76D2,495
  • 76C439
  • 76N155
  • 76B1
  • 76LJ1

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 59923 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.

  • Glacial Drift886 wells · 60% · median 99 ft
  • Alluvium (holocene)455 wells · 31% · median 40 ft
  • Wallace Formation (of Piegan Group)66 wells · 4% · median 235 ft
  • Alluvium (quaternary)21 wells · 1% · median 29 ft
  • Alluvium (pleistocene)13 wells · 1% · median 92 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 59923

Petroleum releases

102

5 open · 97 resolved

Superfund program sites

6

2 on or proposed for the NPL

Registered tank facilities

73

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 2025. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.