MBMG-127166
Montana Bureau of Mines and Geology
Located in Lake County, Montana, this groundwater monitoring location is associated with a water well in the Northern Rocky Mountains Intermontane Basins aquifer systems.
Well Construction
| Depth | Description | |
|---|---|---|
| -1.5-439.0 ft | 6.0 in diameter steel casing | |
| 439.0-439.0 ft | 6.0 in diameter open bottom screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-31.0 ft | unknown | BROWN CLAY GRAVEL AND BOULDERS |
| 31.0-144.0 ft | unknown | BROWN CLAY GRAVEL AND SEEPAGE |
| 144.0-176.0 ft | unknown | BROWN CLAY AND SEEPAGE |
| 176.0-297.0 ft | unknown | BROWN CLAY SAND GRAVEL SEEPAGE |
| 297.0-434.0 ft | unknown | SAND GRAVEL HEAVY SILT BROWN CLAY AND SEEPAGE |
| 434.0-439.0 ft | unknown | SAND GRAVEL AND WATER |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-127166 Site Number 127166 Site Type WELL Lat/Long (NAD83) 47.8359, -113.8168 Well Depth 439 Feet Elevation (NAVD88) 3267.98 ft Latitude 47.83588214 Longitude -113.816805 Local Aquifer Name 112ALVM ALLUVIUM (PLEISTOCENE) (None) National Aquifer Name Northern Rocky Mountains Intermontane Basins aquifer systems (S100NRMTIB) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Background Water Quality Network MONTANA GWIC Additional info Link 1 -
Activity Start Date Activity Start Time Characteristic Name Measure Value Units Detection Limit Value Type Sample Fraction Method Name Analytical Method System Sample Method ID Sample Method ID Context Sample Method Name Activity Type Code Data Provided By -
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How do we calculate statistics?
Overall Water Level Statistics (Depth to water, feet below land surface) Lowest Water Level Median Water Level Highest Water Level First Measurement Date Last Measurement Date Number of Measurements Years of Record Latest Value Latest Percentile 25.83 21.31 12.13 1993-05-13 2026-04-09 115 32.9 23.73 13.33 Statistics Calculated 2026-05-16 Monthly Water Level Statistics (Depth to water, feet below land surface) Month Lowest Median 10th Percentile 25th Percentile 50th Percentile 75th Percentile 90th Percentile Highest Median Number of Measurements Years of Record Jan 25.13 24.26 22.02 20.00 19.12 15.23 14.23 12 12 Mar 25.25 25.06 23.68 21.74 20.63 16.56 16.04 12 12 Apr 25.59 24.66 22.81 21.33 20.78 19.16 19.00 14 14 Jun 24.29 24.20 23.00 20.07 16.44 13.98 13.78 10 10 Jul 23.98 23.64 21.38 19.36 18.25 15.74 14.87 13 13 Oct 24.87 24.49 22.47 20.88 18.59 17.70 17.23 14 14 Statistics Calculated 2026-05-16 -
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