MBMG-65432
Montana Bureau of Mines and Geology
Located in Lewis and Clark 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 | |
|---|---|---|
| 0.0-120.0 ft | 6.0 in diameter steel casing | |
| 110.0-120.0 ft | 6.0 in diameter perforated casing screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-101.0 ft | unknown | RED SHALE |
| 101.0-105.0 ft | unknown | RED SHALE 4 GALS WATER |
| 105.0-116.0 ft | unknown | RED SHALE |
| 116.0-120.0 ft | unknown | WATER |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-65432 Site Number 65432 Site Type WELL Lat/Long (NAD83) 46.7029, -112.0592 Well Depth 120 Feet Elevation (NAVD88) 3846.79 ft Latitude 46.702943055556 Longitude -112.059223055556 Local Aquifer Name 400SPKN (None) National Aquifer Name Northern Rocky Mountains Intermontane Basins aquifer systems (S100NRMTIB) Aquifer Type UNCONFINED Water-Level Well Type Trend Water-Level Well Characteristics Background Water Quality Network 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 96.22 80.31 63.78 1995-10-31 2026-04-09 8172 30.5 90.81 14.29 Statistics Calculated 2026-05-20 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 92.00 90.30 85.19 80.47 76.07 73.29 69.91 25 25 Feb 92.80 90.40 86.06 81.16 75.97 73.61 71.76 28 28 Mar 92.67 91.05 87.47 81.62 76.83 74.39 72.92 29 29 Apr 93.30 91.52 88.58 81.45 76.66 73.42 72.88 27 27 May 94.12 92.15 88.11 81.57 77.26 72.79 72.44 28 28 Jun 94.61 91.36 86.86 81.66 77.06 74.40 68.48 27 27 Jul 94.28 90.05 85.11 81.16 76.09 73.86 65.15 27 27 Aug 96.22 88.25 82.93 80.04 75.24 71.11 63.89 28 28 Sep 90.77 84.12 81.09 79.34 75.95 71.11 70.59 28 28 Oct 92.89 85.34 80.43 78.80 75.41 71.07 65.29 30 30 Nov 91.88 86.22 82.61 79.22 75.49 72.45 69.24 23 23 Dec 88.25 84.48 82.39 79.06 74.83 73.32 68.97 26 26 Statistics Calculated 2026-05-20 -
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