Montana water data · Zip Code in Lake County
ZIP 59821: well depth, groundwater and water rights
What the public record says about water in ZIP code 59821: 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 1,925 public records from MBMG GWIC, Montana DNRC, Montana DEQ, EPA UST Finder, US Census (ZIP Code Tabulation Area)
Wells on record
835
2.6 per sq mi
Median well depth
118 ft
half of wells 75–173 ft
Median static water level
50 ft
744 measurements
Median tested yield
20 gpm
742 pump tests
Well depth
How deep are wells in ZIP 59821?
Of 803 wells with a recorded total depth, the median is 118 feet. Half were drilled between 75 and 173 feet; one in ten went deeper than 240 feet and one in ten found water shallower than 46 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
50 ft
median depth to water at rest · half between 27 and 85 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
20 gpm
median tested yield · half between 10 and 30 gpm
5% of tested wells produced under 5 gallons per minute and 51% 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 59821
132 wells have been completed here since 2016, 16 of them in the last twelve months. The newest log on file was completed August 13, 2026. Records run back to 1910.
What the wells are for
- Domestic740
- Stockwater63
- Monitoring29
- Irrigation23
- Unused15
How they were drilled
- Rotary365
- Forward Rotary93
- Dual Rotary51
- Cable50
Drillers filing well logs in ZIP 59821
- Coldwater Drilling And Pumps29 since 2016 · 2026
- Camp Well Drilling And Pump Service23 since 2016 · 2026
- Jeromes Drilling Co20 since 2016 · 2025
- Ace Drilling15 since 2016 · 2026
- Camp Well Drilling & Pump Supply10 since 2016 · 2020
- Oh Well Drilling And Pump9 since 2016 · 2025
- Western Montana Drilling Co.7 since 2016 · 2026
- Ak Drilling Inc6 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 59821
Montana DNRC lists 1,071 water rights with a point of diversion inside this area: 746 groundwater and 325 surface water, 759 of them active. The median priority date is 1981, and the oldest claim dates to 1854.
Types of right
- Statement Of Claim325
- Registration Certificate271
- Ground Water Certificate253
- Domestic Allowance63
- Compact47
Purposes
- Domestic220
- Irrigation181
- Stock178
- Domestic; Lawn And Garden91
- Lawn And Garden; Domestic65
DNRC basins
- 76L1,067
- 76M3
- 76F1
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 59821 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 Outwash (pleistocene)208 wells · 40% · median 68 ft
- Glacial Drift194 wells · 37% · median 120 ft
- Missoula Group37 wells · 7% · median 208 ft
- Sediments (tertiary)17 wells · 3% · median 162 ft
- Glacial Till16 wells · 3% · median 140 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 59821
Petroleum releases
5
0 open · 5 resolved
Superfund program sites
0
none on the National Priorities List
Registered tank facilities
14
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 2014. A property report screens the sites within a quarter, half and one mile of a specific parcel and links the agency records.