MBMG-131374
Montana Bureau of Mines and Geology
Located in Powell 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 | |
|---|---|---|
| -1.5-70.0 ft | 6.0 in diameter steel casing | |
| 61.0-71.0 ft | 6.0 in diameter torch or plasma cuts screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | TOPSOIL |
| 3.0-21.0 ft | unknown | CEMENTED GRAVEL |
| 21.0-68.0 ft | unknown | PINK CLAY |
| 68.0-71.0 ft | unknown | GRAVEL & WATER |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-131374 Site Number 131374 Site Type WELL Lat/Long (NAD83) 46.8704, -112.9683 Well Depth 71 Feet Elevation (NGVD29) 4290.0 ft Latitude 46.87042 Longitude -112.96828 Local Aquifer Name 112SNGR, SAND AND GRAVEL (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 12.34 5.05 0.35 2000-01-27 2026-04-10 96 26.2 8.89 0.0 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 Jul 12.02 10.9 3.74 2.85 2.23 1.33 1.24 14 14 Oct 6.56 6.42 5.45 4.47 4.33 2.99 2.67 11 11 Statistics Calculated 2026-05-16 -
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