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Montana water data · Zip Code in Gallatin County

ZIP 59718: well depth, groundwater and water rights

What the public record says about water in ZIP code 59718: 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 11,354 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)

Wells on record

5,455

33.2 per sq mi

Median well depth

60 ft

half of wells 42–99 ft

Median static water level

16 ft

5,156 measurements

Median tested yield

35 gpm

5,178 pump tests

Well depth

How deep are wells in ZIP 59718?

Of 5,336 wells with a recorded total depth, the median is 60 feet. Half were drilled between 42 and 99 feet; one in ten went deeper than 156 feet and one in ten found water shallower than 36 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
30%
50–100 ft
45%
100–200 ft
19%
200–300 ft
3%
300–500 ft
2%
500 ft and deeper
0%

Static water level

16 ft

median depth to water at rest · half between 10 and 37 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

35 gpm

median tested yield · half between 25 and 60 gpm

1% of tested wells produced under 5 gallons per minute and 89% 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 59718

923 wells have been completed here since 2016, 61 of them in the last twelve months. The newest log on file was completed July 29, 2026. Records run back to 1860.

What the wells are for

  • Domestic3,981
  • Irrigation892
  • Stockwater371
  • Monitoring218
  • Public Water Supply139

How they were drilled

  • Rotary3,318
  • Cable810
  • Forward Rotary323
  • Churn185

Drillers filing well logs in ZIP 59718

  • Potts Drilling Inc263 since 2016 · 2026
  • Van Dyken Drilling Inc170 since 2016 · 2026
  • Bridger Drilling Inc158 since 2016 · 2026
  • Red Tiger Drilling138 since 2016 · 2026
  • Diamond M Drilling Inc106 since 2016 · 2025
  • Old Town Drilling21 since 2016 · 2026
  • Excel Pump And Well Inc.15 since 2016 · 2026
  • Okeefe Drilling Co12 since 2016 · 2026

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 59718

Montana DNRC lists 5,838 water rights with a point of diversion inside this area: 4,574 groundwater and 1,264 surface water, 5,359 of them active. The median priority date is 1986, and the oldest claim dates to 1860.

Types of right

  • Ground Water Certificate3,716
  • Statement Of Claim1,859
  • Provisional Permit127
  • Exempt Notice120
  • Water Reservation8

Purposes

  • Domestic1,519
  • Irrigation1,047
  • Domestic; Lawn And Garden895
  • Stock629
  • Lawn And Garden343

DNRC basins

  • 41H5,835
  • 41F3

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 59718 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.

  • Cenozoic Undifferentiated216 wells · 43% · median 123 ft
  • Alluvium (quaternary)77 wells · 15% · median 48 ft
  • Alluvium (holocene)70 wells · 14% · median 28 ft
  • Sediments (tertiary)32 wells · 6% · median 118 ft
  • Gneiss And Schist (early Proterozoic Or Archean)25 wells · 5% · median 185 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 59718

Petroleum releases

27

2 open · 25 resolved

Superfund program sites

0

none on the National Priorities List

Registered tank facilities

34

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 2025. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.