Montana water data · Zip Code in Gallatin County
ZIP 59730: well depth, groundwater and water rights
What the public record says about water in ZIP code 59730: 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 3,735 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
1,483
2.2 per sq mi
Median well depth
94 ft
half of wells 55–212 ft
Median static water level
37 ft
1,366 measurements
Median tested yield
30 gpm
1,400 pump tests
Well depth
How deep are wells in ZIP 59730?
Of 1,435 wells with a recorded total depth, the median is 94 feet. Half were drilled between 55 and 212 feet; one in ten went deeper than 419 feet and one in ten found water shallower than 38 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.
Static water level
37 ft
median depth to water at rest · half between 15 and 79 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
30 gpm
median tested yield · half between 15 and 50 gpm
3% 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 59730
261 wells have been completed here since 2016, 21 of them in the last twelve months. The newest log on file was completed August 16, 2026. Records run back to 1864.
What the wells are for
- Domestic1,217
- Irrigation84
- Stockwater73
- Public Water Supply63
- Monitoring60
How they were drilled
- Rotary969
- Cable144
- Forward Rotary72
- Churn42
Drillers filing well logs in ZIP 59730
- Potts Drilling Inc111 since 2016 · 2026
- Red Tiger Drilling37 since 2016 · 2026
- Bridger Drilling Inc33 since 2016 · 2024
- Van Dyken Drilling Inc27 since 2016 · 2026
- Diamond M Drilling Inc23 since 2016 · 2026
- Okeefe Drilling Co18 since 2016 · 2017
- Excel Pump And Well Inc.5 since 2016 · 2025
- Old Town Drilling4 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 59730
Montana DNRC lists 2,227 water rights with a point of diversion inside this area: 1,323 groundwater and 899 surface water, 1,995 of them active. The median priority date is 1975, and the oldest claim dates to 1862.
Types of right
- Statement Of Claim1,051
- Ground Water Certificate1,024
- Provisional Permit52
- Water Reservation34
- Exempt Notice33
Purposes
- Domestic657
- Stock453
- Irrigation378
- Domestic; Lawn And Garden182
- Commercial46
DNRC basins
- 41H2,148
- 41F41
- 43B38
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 59730 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.
- Alluvium (quaternary)28 wells · 14% · median 37 ft
- Sand And Gravel (quaternary)24 wells · 12% · median 46 ft
- Kootenai Formation16 wells · 8% · median 209 ft
- Sand And Gravel (holocene)15 wells · 7% · median 45 ft
- Gneiss And Schist (early Proterozoic Or Archean)13 wells · 6% · median 146 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 59730
Petroleum releases
10
1 open · 9 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
15
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 2021. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.