MBMG-76048
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 | |
|---|---|---|
| -2.0-295.0 ft | 8.0 in diameter steel casing | |
| 295.0-295.0 ft | 8.0 in diameter open bottom screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-1.0 ft | unknown | BLACK TOPSOIL |
| 1.0-4.0 ft | unknown | TAN SANDY SILTY CLAY |
| 4.0-44.0 ft | unknown | TAN BROWN SAND |
| 44.0-138.0 ft | unknown | TAN CLAY WITH A FEW SCATTERED GRAVELS MIXED IN |
| 138.0-212.0 ft | unknown | LARGE GRAVEL AND COBBLESTONES EMBEDDED IN TAN CLAY |
| 212.0-217.0 ft | unknown | BLUE GRAVEL MIXED WITH TAN SILTY CLAY |
| 217.0-236.0 ft | unknown | LARGE BLUE GRAVEL AND COBBLESTONES EMBEDDED IN TAN SILTY CLAY. |
| 236.0-258.0 ft | unknown | FINE BROWN SILTY SAND. SOME SILTY WATER |
| 258.0-261.0 ft | unknown | FINE SAND AND GRAVEL WITH SOME TAN SILTY CLAY MIXED IN |
| 261.0-269.0 ft | unknown | FINE BROWN SAND MIXED W/TAN SILT |
| 269.0-282.0 ft | unknown | FINE TO COARSE BLUE GRAVEL MIXED W/TAN SILTY SAND |
| 282.0-296.0 ft | unknown | FINE TO COARSE SAND- GRAVEL-COBBLESTONES AND BOULDER |
| 296.0-300.0 ft | unknown | LARGE COARSE COBBLESTONES AND BOULDERS MIXED W/FINE TO COARSE SILT AND SAND. WATER. |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-76048 Site Number 76048 Site Type WELL Lat/Long (NAD83) 47.5659, -114.1025 Well Depth 295 Feet Elevation (NGVD29) 3070.0 ft Latitude 47.56590106 Longitude -114.10249658 Local Aquifer Name 112LKML (None) National Aquifer Name Northern Rocky Mountains Intermontane Basins aquifer systems (S100NRMTIB) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Suspected / Anticipated Changes 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 70.57 11.05 -1.00 1974-08-26 2026-04-06 1444 51.7 14.96 9.091 Statistics Calculated 2026-05-18 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 15.28 13.49 11.46 10.53 8.30 4.90 2.90 46 46 Apr 16.59 14.62 13.15 11.52 9.40 6.93 5.03 43 43 May 17.08 17.02 15.89 9.70 6.36 6.11 6.10 10 10 Jul 63.02 58.76 28.70 14.19 10.56 5.86 5.42 27 27 Sep 17.97 17.90 17.16 10.3 3.52 -0.6 -0.90 10 10 Oct 15.88 13.72 11.85 10.62 8.00 4.04 -1.00 41 41 Statistics Calculated 2026-05-18 -
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