MBMG-163226
Montana Bureau of Mines and Geology
Located in Ravalli 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 | |
|---|---|---|
| -2.0-138.0 ft | 6.0 in diameter steel casing | |
| 130.0-160.0 ft | 4.0 in diameter pvc casing | |
| 130.0-135.0 ft | 4.0 in diameter torch cuts screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-5.0 ft | unknown | SAND AND GRAVEL |
| 5.0-8.0 ft | unknown | BROWN CLAY |
| 8.0-10.0 ft | unknown | LARGE ROCKS AND CLAY |
| 10.0-17.0 ft | unknown | SAND AND GRAVEL WITH ASH |
| 17.0-21.0 ft | unknown | FINE SAND |
| 21.0-30.0 ft | unknown | SAND AND GRAVEL WB 14 GPM 9FT STATIC |
| 30.0-37.0 ft | unknown | SANDY CLAY |
| 37.0-40.0 ft | unknown | COARSE SAND |
| 40.0-48.0 ft | unknown | TAN CLAY |
| 48.0-55.0 ft | unknown | SAND AND GRAVEL WB |
| 55.0-68.0 ft | unknown | CLAY |
| 68.0-72.0 ft | unknown | FINE SAND |
| 72.0-74.0 ft | unknown | COARSE SAND |
| 74.0-76.0 ft | unknown | TAN CLAY |
| 76.0-94.0 ft | unknown | BROWN CLAY |
| 94.0-108.0 ft | unknown | BLUE CLAY |
| 108.0-112.0 ft | unknown | COARSE SAND WB 45-50 GPM 41 WATER STATIC |
| 112.0-120.0 ft | unknown | TAN CLAY WITH SAND |
| 120.0-135.0 ft | unknown | INTERMITTENT LAYERS OF SAND AND TAN CLAY WB 15 GPM 36 FT STATIC |
| 135.0-146.0 ft | unknown | TAN CLAY WITH SAND |
| 146.0-151.0 ft | unknown | BLUE CLAY |
| 151.0-160.0 ft | unknown | BROWN CLAY |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-163226 Site Number 163226 Site Type WELL Lat/Long (NAD83) 46.2444, -114.128 Well Depth 160 Feet Elevation (NAVD88) 3642.32 ft Latitude 46.24435636 Longitude -114.1280285 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 Known 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 43.83 39.07 35.01 1997-10-08 2026-01-13 9165 28.2 38.59 92.86 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 40.11 39.75 39.55 39.30 39.15 38.75 38.54 27 27 Feb 40.89 40.45 40.14 39.93 39.54 39.19 38.81 26 26 Mar 41.45 41.02 40.71 40.45 40.15 39.49 38.84 28 28 Apr 41.63 41.53 41.34 41.00 40.71 39.57 39.40 27 27 May 43.11 42.64 41.42 41.14 40.84 40.24 40.05 27 27 Jun 43.43 41.49 40.39 39.76 38.96 38.06 36.51 28 28 Jul 41.89 41.14 39.34 37.85 37.44 36.99 35.95 25 25 Aug 39.84 39.55 37.97 36.90 36.16 35.80 35.75 26 26 Sep 38.85 38.05 37.24 36.72 36.18 35.81 35.33 28 28 Oct 38.09 37.65 37.39 37.01 36.86 36.60 36.32 26 26 Nov 38.47 38.25 38.02 37.76 37.67 37.43 36.98 25 25 Dec 39.33 39.05 38.83 38.56 38.37 37.88 37.44 27 27 Statistics Calculated 2026-05-18 -
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