Montana WaterReport
Check a property

Montana water data · City in Lake County

Ronan: well depth, groundwater and water rights

What the public record says about water in Ronan: 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 231 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (place boundary)

Wells on record

146

118.8 per sq mi

Median well depth

20 ft

half of wells 15–26 ft

Median static water level

6 ft

84 measurements

Median tested yield

100 gpm

18 pump tests

Well depth

How deep are wells in Ronan?

Of 105 wells with a recorded total depth, the median is 20 feet. Half were drilled between 15 and 26 feet; one in ten went deeper than 320 feet and one in ten found water shallower than 13 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
80%
50–100 ft
5%
100–200 ft
2%
200–300 ft
0%
300–500 ft
10%
500 ft and deeper
3%

Static water level

6 ft

median depth to water at rest · half between 5 and 12 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

100 gpm

median tested yield · half between 80 and 169 gpm

0% of tested wells produced under 5 gallons per minute and 100% 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 Ronan

13 wells have been completed here since 2016, 1 of them in the last twelve months. The newest log on file was completed October 13, 2025. Records run back to 1961.

What the wells are for

  • Monitoring124
  • Domestic10
  • Public Water Supply7
  • Irrigation4
  • Stockwater3

How they were drilled

  • Hollowstem Auger35
  • Rotary12
  • Geoprobe Direct Push10
  • Hollow Stem Auger10

Drillers filing well logs in Ronan

  • Haz Tech Drilling Inc9 since 2016 · 2017
  • Ace Drilling2 since 2016 · 2025
  • Okeefe Drilling Co1 since 2016 · 2018
  • Mse Technology11 all-time · 2009
  • Patterson8 all-time · 2000
  • Ron Sink Ewe7 all-time · 2006
  • Hkm Engineering Inc6 all-time · 2006
  • Mse - Hkm Engineering6 all-time · 1998

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 Ronan

Montana DNRC lists 18 water rights with a point of diversion inside this area: 13 groundwater and 5 surface water, 15 of them active. The median priority date is 1981, and the oldest claim dates to 1919.

Types of right

  • Statement Of Claim6
  • Ground Water Certificate5
  • Provisional Permit4
  • Registration Certificate2
  • Geothermal Allowance1

Purposes

  • Stock3
  • Commercial3
  • Domestic2
  • Irrigation2
  • Municipal2

DNRC basins

  • 76L18

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 Ronan 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 Lake Missoula Beds27 wells · 75% · median 22 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 Ronan

Petroleum releases

35

8 open · 27 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

32

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 2024. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.