MBMG-80745
Montana Bureau of Mines and Geology
Located in Flathead 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 | |
|---|---|---|
| -1.0-396.5 ft | 7.0 in diameter steel casing |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-1.0 ft | unknown | TOPSOIL |
| 1.0-12.0 ft | unknown | SILT |
| 12.0-45.0 ft | unknown | SAND- SEEPAGE |
| 45.0-240.0 ft | unknown | SILT |
| 240.0-395.0 ft | unknown | SILTY CLAY |
| 395.0-400.0 ft | unknown | SAND GRAVEL WATER |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-80745 Site Number 80745 Site Type WELL Lat/Long (NAD83) 45.8137, -111.4678 Well Depth 145 Feet Elevation (NAVD88) 4226.709 ft Latitude 45.81365165 Longitude -111.4678249 Local Aquifer Name 120SNGR, SAND AND GRAVEL (TERTIARY) (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 9.48 5.90 1.89 1996-02-25 2026-04-06 624 30.2 6.82 83.3 Statistics Calculated 2026-05-09 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 7.79 7.75 7.44 6.73 6.56 5.05 4.20 14 14 Mar 9.31 9.27 8.69 8.34 7.35 6.15 5.57 13 13 Apr 9.22 9.12 8.53 8.00 7.21 6.41 5.97 17 17 May 8.87 8.74 7.39 6.11 4.84 3.24 3.02 11 11 Jun 5.50 5.41 4.88 4.26 3.46 2.14 1.89 12 12 Jul 9.40 9.38 7.37 5.73 4.80 3.64 3.35 12 12 Oct 7.50 6.99 6.01 5.48 4.74 3.30 2.31 18 18 Statistics Calculated 2026-05-09 -
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