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Montana water data · Zip Code in Lincoln County

ZIP 59918: well depth, groundwater and water rights

What the public record says about water in ZIP code 59918: 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 626 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

275

2.9 per sq mi

Median well depth

230 ft

half of wells 134–305 ft

Median static water level

100 ft

260 measurements

Median tested yield

25 gpm

267 pump tests

Well depth

How deep are wells in ZIP 59918?

Of 274 wells with a recorded total depth, the median is 230 feet. Half were drilled between 134 and 305 feet; one in ten went deeper than 425 feet and one in ten found water shallower than 90 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
3%
50–100 ft
10%
100–200 ft
28%
200–300 ft
30%
300–500 ft
25%
500 ft and deeper
5%

Static water level

100 ft

median depth to water at rest · half between 43 and 160 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

25 gpm

median tested yield · half between 15 and 30 gpm

2% of tested wells produced under 5 gallons per minute and 69% 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 59918

57 wells have been completed here since 2016, 3 of them in the last twelve months. The newest log on file was completed June 8, 2026. Records run back to 1939.

What the wells are for

  • Domestic262
  • Public Water Supply7
  • Stockwater3
  • Industrial1
  • Other1

How they were drilled

  • Rotary191
  • Forward Rotary32
  • Churn Drill12
  • Cable11

Drillers filing well logs in ZIP 59918

  • Davis Brothers Drilling32 since 2016 · 2026
  • Water Resource Services10 since 2016 · 2026
  • Post Pump And Drilling Llc4 since 2016 · 2021
  • Post Pump & Drilling Llc4 since 2016 · 2023
  • Joe Liss Water Wells, Inc.3 since 2016 · 2017
  • Stinger Drilling3 since 2016 · 2022
  • Certified Well And Pump26 all-time · 2007
  • Joe Liss Drilling21 all-time · 2007

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 59918

Montana DNRC lists 343 water rights with a point of diversion inside this area: 237 groundwater and 106 surface water, 323 of them active. The median priority date is 1982, and the oldest claim dates to 1897.

Types of right

  • Ground Water Certificate205
  • Statement Of Claim119
  • Provisional Permit11
  • Exempt Notice5
  • 62-73 Ground Water Record1

Purposes

  • Domestic126
  • Domestic; Lawn And Garden45
  • Stock39
  • Irrigation39
  • Domestic; Lawn And Garden; Stock15

DNRC basins

  • 76D342
  • 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 59918 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 Drift88 wells · 51% · median 137 ft
  • Belt Supergroup75 wells · 44% · median 340 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 59918

Petroleum releases

2

0 open · 2 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

6

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 1989. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.