MBMG-120512
Montana Bureau of Mines and Geology
Located in Missoula 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 | |
|---|---|---|
| 0.0-103.0 ft | 6.0 in diameter steel casing | |
| 103.0-103.0 ft | 6.0 in diameter open bottom screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | TOPSOIL |
| 2.0-20.0 ft | unknown | GRAVEL AND ROCK |
| 20.0-50.0 ft | unknown | GRAVEL & BROWN SAND |
| 50.0-75.0 ft | unknown | CLAY & YELLOW SAND |
| 75.0-90.0 ft | unknown | CLAY & BROWN GRAVEL |
| 90.0-103.0 ft | unknown | GRAVEL - WATER 30 GPM |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-120512 Site Number 120512 Site Type WELL Lat/Long (NAD83) 47.1694, -113.4487 Well Depth 103 Feet Elevation (NGVD29) 4150.0 ft Latitude 47.16939 Longitude -113.44874 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 49.89 43.70 38.98 1993-05-14 2026-04-10 142 32.9 45.02 12.50 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 47.08 46.45 43.99 43.14 42.49 41.64 41.38 13 13 Mar 46.30 45.92 45.33 43.80 42.49 41.83 41.61 14 14 Apr 45.40 45.17 44.20 41.26 40.83 40.73 40.72 15 15 May 46.59 46.41 44.70 43.73 41.72 40.84 40.80 10 10 Jun 46.61 46.09 44.24 43.19 40.81 39.40 38.98 12 12 Jul 49.89 49.33 46.97 44.24 43.18 42.25 41.85 13 13 Sep 46.45 46.41 45.61 44.66 42.24 41.06 40.46 13 13 Oct 48.77 47.57 45.60 43.84 43.12 42.14 41.64 16 16 Dec 45.73 45.68 45.14 44.64 42.75 41.96 41.90 11 11 Statistics Calculated 2026-05-16 -
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