MBMG-98056
Montana Bureau of Mines and Geology
Located in Yellowstone County, Montana, this groundwater monitoring location is associated with a water well in the Alluvial aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| -1.0-94.0 ft | 6.0 in diameter pvc casing | |
| 80.0-94.0 ft | 6.0 in diameter 1/2in slot perfs screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-10.0 ft | unknown | CLAY |
| 10.0-14.0 ft | unknown | GRAVEL |
| 14.0-80.0 ft | unknown | CLAY |
| 80.0-90.0 ft | unknown | GRAVEL |
| 90.0-94.0 ft | unknown | SHALE |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-98056 Site Number 98056 Site Type WELL Lat/Long (NAD83) 45.6896, -108.7795 Well Depth 94 Feet Elevation (NGVD29) 3460.0 ft Latitude 45.68964909 Longitude -108.7795001 Local Aquifer Name 111ALVM, ALLUVIUM (HOLOCENE) (None) National Aquifer Name Alluvial aquifers (N100ALLUVL) Aquifer Type UNCONFINED 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 85.18 80.37 68.45 1983-02-18 2026-02-09 8536 43.0 81.35 89.29 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 82.13 81.22 81.01 80.78 80.61 80.23 79.76 29 29 Feb 82.62 82.58 82.40 82.23 81.91 81.27 80.95 27 27 Mar 83.67 83.50 83.32 83.14 82.92 82.24 81.37 25 25 Apr 84.54 84.44 84.28 83.91 83.63 81.87 81.66 30 30 May 85.05 84.80 84.72 84.35 83.86 81.79 81.41 28 28 Jun 83.80 83.57 82.86 82.04 80.45 78.48 74.64 26 26 Jul 81.98 80.19 78.00 75.49 73.14 71.80 71.29 29 29 Aug 77.69 73.05 72.20 71.52 70.91 70.04 69.54 26 26 Sep 73.86 72.69 72.26 71.69 70.83 70.12 69.05 26 26 Oct 73.64 73.46 72.77 72.45 71.32 70.41 70.38 27 27 Nov 75.87 75.73 75.62 75.00 74.43 74.03 73.28 22 22 Dec 79.45 79.25 79.14 78.86 78.40 78.14 77.65 20 20 Statistics Calculated 2026-05-16 -
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