Montana WaterReport
Check a property

Montana water data · Community in Jefferson County

Montana City: well depth, groundwater and water rights

What the public record says about water in Montana City: 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 1,940 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (place boundary)

Wells on record

1,070

31.4 per sq mi

Median well depth

245 ft

half of wells 165–350 ft

Median static water level

71 ft

1,020 measurements

Median tested yield

20 gpm

1,036 pump tests

Well depth

How deep are wells in Montana City?

Of 1,058 wells with a recorded total depth, the median is 245 feet. Half were drilled between 165 and 350 feet; one in ten went deeper than 480 feet and one in ten found water shallower than 98 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
4%
50–100 ft
6%
100–200 ft
23%
200–300 ft
30%
300–500 ft
28%
500 ft and deeper
9%

Static water level

71 ft

median depth to water at rest · half between 35 and 117 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 10 and 30 gpm

8% of tested wells produced under 5 gallons per minute and 57% 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 Montana City

194 wells have been completed here since 2016, 6 of them in the last twelve months. The newest log on file was completed April 22, 2026. Records run back to 1915.

What the wells are for

  • Domestic960
  • Public Water Supply33
  • Monitoring30
  • Stockwater27
  • Irrigation19

How they were drilled

  • Rotary698
  • Air Rotary199
  • Churn32
  • Forward Rotary25

Drillers filing well logs in Montana City

  • A-10 Drilling66 since 2016 · 2026
  • H & L Drilling Inc54 since 2016 · 2025
  • Western Water Wells25 since 2016 · 2025
  • Lindsay Drilling Co Inc21 since 2016 · 2026
  • Aaaa Water Well Drilling Inc20 since 2016 · 2025
  • Lindsay Drilling Co5 since 2016 · 2025
  • Okeefe Drilling Co3 since 2016 · 2025
  • Lindsay Drilling100 all-time · 2011

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 Montana City

Montana DNRC lists 853 water rights with a point of diversion inside this area: 788 groundwater and 65 surface water, 788 of them active. The median priority date is 2000, and the oldest claim dates to 1858.

Types of right

  • Ground Water Certificate731
  • Statement Of Claim89
  • Exempt Notice19
  • Provisional Permit12
  • Reserved Claim1

Purposes

  • Domestic333
  • Domestic; Lawn And Garden228
  • Domestic; Stock40
  • Stock36
  • Domestic; Lawn And Garden; Stock31

DNRC basins

  • 41I853

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 Montana City 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.

  • Boulder Batholith26 wells · 57% · median 199 ft
  • Plutonic Rocks (upper Cretaceous)8 wells · 17% · median 295 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 Montana City

Petroleum releases

10

2 open · 8 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

7

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 2018. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.