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Montana water data · Zip Code in Sweet Grass County

ZIP 59033: well depth, groundwater and water rights

What the public record says about water in ZIP code 59033: 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 354 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

146

4.1 per sq mi

Median well depth

80 ft

half of wells 51–130 ft

Median static water level

28 ft

135 measurements

Median tested yield

25 gpm

130 pump tests

Well depth

How deep are wells in ZIP 59033?

Of 142 wells with a recorded total depth, the median is 80 feet. Half were drilled between 51 and 130 feet; one in ten went deeper than 349 feet and one in ten found water shallower than 28 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
23%
50–100 ft
37%
100–200 ft
24%
200–300 ft
4%
300–500 ft
10%
500 ft and deeper
2%

Static water level

28 ft

median depth to water at rest · half between 12 and 55 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 18 and 40 gpm

5% of tested wells produced under 5 gallons per minute and 72% 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 59033

34 wells have been completed here since 2016, 4 of them in the last twelve months. The newest log on file was completed June 25, 2026. Records run back to 1890.

What the wells are for

  • Domestic103
  • Stockwater37
  • Irrigation15
  • Public Water Supply15
  • Monitoring4

How they were drilled

  • Rotary62
  • Cable25
  • Dual Rotary11
  • Forward Rotary2

Drillers filing well logs in ZIP 59033

  • Potts Drilling Inc13 since 2016 · 2025
  • Thompson Drilling & Pump9 since 2016 · 2025
  • Birchell Drilling6 since 2016 · 2022
  • American Drilling & Supply3 since 2016 · 2025
  • Van Dyken Drilling Inc1 since 2016 · 2026
  • Birchell Drilling22 all-time · 2006
  • B & H12 all-time · 1999
  • Northern Pacific Railway7 all-time · 1950

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 59033

Montana DNRC lists 203 water rights with a point of diversion inside this area: 146 groundwater and 57 surface water, 174 of them active. The median priority date is 1936, and the oldest claim dates to 1879.

Types of right

  • Statement Of Claim138
  • Ground Water Certificate47
  • Provisional Permit9
  • Conservation District Record6
  • Water Reservation2

Purposes

  • Stock79
  • Irrigation26
  • Domestic22
  • Wildlife21
  • Fish And Wildlife9

DNRC basins

  • 43B165
  • 43QJ38

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 59033 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.

  • Hell Creek Formation8 wells · 50% · median 85 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 59033

Petroleum releases

1

0 open · 1 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

4

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.