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Montana water data · Community in Cascade County

Ulm: well depth, groundwater and water rights

What the public record says about water in Ulm: 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 430 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (place boundary)

Wells on record

231

11.4 per sq mi

Median well depth

176 ft

half of wells 69–223 ft

Median static water level

19 ft

190 measurements

Median tested yield

25 gpm

190 pump tests

Well depth

How deep are wells in Ulm?

Of 203 wells with a recorded total depth, the median is 176 feet. Half were drilled between 69 and 223 feet; one in ten went deeper than 464 feet and one in ten found water shallower than 26 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
18%
50–100 ft
12%
100–200 ft
37%
200–300 ft
18%
300–500 ft
5%
500 ft and deeper
9%

Static water level

19 ft

median depth to water at rest · half between 10 and 28 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 40 gpm

3% of tested wells produced under 5 gallons per minute and 67% 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 Ulm

27 wells have been completed here since 2016, 1 of them in the last twelve months. The newest log on file was completed July 6, 2026. Records run back to 1914.

What the wells are for

  • Domestic181
  • Stockwater29
  • Irrigation22
  • Monitoring22
  • Public Water Supply6

How they were drilled

  • Rotary108
  • Cable19
  • Hollow Stem Auger10
  • Auger8

Drillers filing well logs in Ulm

  • Aquasource Drilling Llc11 since 2016 · 2024
  • Boland Drilling4 since 2016 · 2026
  • Pat Byrne Drilling Inc3 since 2016 · 2018
  • Western Water Wells3 since 2016 · 2023
  • Corveau Drilling1 since 2016 · 2018
  • Byrne48 all-time · 2003
  • Poverty Drilling19 all-time · 2004
  • Hansen Environmental Drilling7 all-time · 2003

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 Ulm

Montana DNRC lists 191 water rights with a point of diversion inside this area: 173 groundwater and 18 surface water, 180 of them active. The median priority date is 1993, and the oldest claim dates to 1910.

Types of right

  • Ground Water Certificate140
  • Statement Of Claim28
  • Provisional Permit11
  • Exempt Notice10
  • Water Reservation2

Purposes

  • Domestic79
  • Domestic; Lawn And Garden33
  • Lawn And Garden14
  • Domestic; Lawn And Garden; Stock14
  • Domestic; Stock6

DNRC basins

  • 41QJ189
  • 41K2

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 Ulm 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.

  • Sand And Gravel (pleistocene)54 wells · 28% · median 193 ft
  • Alluvium (quaternary)42 wells · 22% · median 52 ft
  • Colorado Shale Or Fm. (of Colorado Group)30 wells · 15% · median 140 ft
  • Kootenai Formation24 wells · 12% · median 460 ft
  • Sand And Gravel (holocene)12 wells · 6% · median 45 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 Ulm

Petroleum releases

1

0 open · 1 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 1996. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.