MBMG-140123
Montana Bureau of Mines and Geology
Located in Musselshell County, Montana, this groundwater monitoring location is associated with a water well in the Lower Tertiary aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| -2.0-35.0 ft | 8.0 in diameter steel casing | |
| 10.0-148.0 ft | 6.0 in diameter pvc casing | |
| 0.0-0.0 ft | 6.0 in diameter slots screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-8.0 ft | unknown | TOPSOIL AND OVERBURDEN |
| 8.0-27.0 ft | unknown | GRAVEL |
| 27.0-35.0 ft | unknown | LIGHT GRAY STICKY CLAY |
| 35.0-50.0 ft | unknown | GRAY SANDSTONE |
| 50.0-58.0 ft | unknown | GRAY AND GREEN SHALE |
| 58.0-61.0 ft | unknown | GRAY SANDSTONE |
| 61.0-62.0 ft | unknown | COAL |
| 62.0-120.0 ft | unknown | GRAY SANDSTONE AND GREEN SHALE SEAMS |
| 120.0-122.0 ft | unknown | COAL |
| 122.0-148.0 ft | unknown | GRAY SANDSTONE GREEN SILSTONE LAYERS- WATER THOUGH THICK SANDSTONE LAYERS THROUGHOUT. |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-140123 Site Number 140123 Site Type WELL Lat/Long (WGS84) 46.4415, -108.5517 Well Depth 148 Feet Elevation (NAVD88) 3190.0 ft Latitude 46.44147 Longitude -108.55171 Local Aquifer Name 125FRUN (None) National Aquifer Name Lower Tertiary aquifers (N300LTRTRY) Aquifer Type CONFINED 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 15.67 11.10 5.64 1994-01-06 2026-04-21 1455 32.2 11.09 48.00 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 15.67 12.85 11.69 11.37 10.45 9.51 9.37 24 24 Apr 12.89 12.28 11.44 11.04 9.89 9.23 7.77 24 24 Jul 14.81 12.13 11.22 10.70 9.49 7.10 5.64 23 23 Oct 11.99 11.86 11.53 11.15 10.45 9.32 8.84 22 22 Statistics Calculated 2026-05-20 -
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