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Montana water data · Zip Code in Chouteau County

ZIP 59450: well depth, groundwater and water rights

What the public record says about water in ZIP code 59450: 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 1,185 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

407

1.1 per sq mi

Median well depth

25 ft

half of wells 18–50 ft

Median static water level

9 ft

250 measurements

Median tested yield

12 gpm

123 pump tests

Well depth

How deep are wells in ZIP 59450?

Of 348 wells with a recorded total depth, the median is 25 feet. Half were drilled between 18 and 50 feet; one in ten went deeper than 120 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
74%
50–100 ft
14%
100–200 ft
4%
200–300 ft
2%
300–500 ft
2%
500 ft and deeper
4%

Static water level

9 ft

median depth to water at rest · half between 5 and 20 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

12 gpm

median tested yield · half between 7 and 25 gpm

16% of tested wells produced under 5 gallons per minute and 39% 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 59450

26 wells have been completed here since 2016, 2 of them in the last twelve months. The newest log on file was completed August 17, 2026. Records run back to 1900.

What the wells are for

  • Test Well193
  • Domestic84
  • Stockwater55
  • Monitoring41
  • Research16

How they were drilled

  • Scs Drill114
  • Ars Drill59
  • Rotary39
  • Unknown38

Drillers filing well logs in ZIP 59450

  • Montana Salinity Control Association14 since 2016 · 2016
  • Aquasource Drilling Llc5 since 2016 · 2025
  • Boland Drilling3 since 2016 · 2025
  • Unknown61 all-time · 1973
  • Byrne16 all-time · 2001
  • Poverty Drilling9 all-time · 2006
  • Scott Brown5 all-time · 2005
  • Gordon Drilling Inc4 all-time · 1995

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 59450

Montana DNRC lists 766 water rights with a point of diversion inside this area: 278 groundwater and 488 surface water, 708 of them active. The median priority date is 1927, and the oldest claim dates to 1875.

Types of right

  • Statement Of Claim638
  • Ground Water Certificate94
  • Provisional Permit13
  • Exempt Notice9
  • Water Reservation6

Purposes

  • Stock534
  • Irrigation74
  • Domestic49
  • Multiple Domestic38
  • Fish And Wildlife12

DNRC basins

  • 41Q757
  • 41R9

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 59450 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 Drift25 wells · 47% · median 24 ft
  • Colorado Shale Or Fm. (of Colorado Group)6 wells · 11% · median 119 ft
  • Sand And Gravel (holocene)5 wells · 9% · median 30 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 59450

Petroleum releases

6

1 open · 5 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 2000. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.