MBMG-279259
Montana Bureau of Mines and Geology
Located in Madison 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 | |
|---|---|---|
| -2.0-60.0 ft | 10.0 in diameter a53b steel casing | |
| 40.0-60.0 ft | 10.0 in diameter holte perforator slots screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | TOPSOIL |
| 2.0-12.0 ft | unknown | SILTY SAND |
| 12.0-18.0 ft | unknown | CLAY |
| 18.0-20.0 ft | unknown | SILTY SAND AND GRAVEL |
| 20.0-60.0 ft | unknown | GRAVEL WITH LITTLE SAND |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-279259 Site Number 279259 Site Type WELL Lat/Long (NAD83) 45.7289, -112.1719 Well Depth 60 Feet Elevation (NAVD88) 4456.98 ft Latitude 45.72892428 Longitude -112.171926249 Local Aquifer Name 110ALVM (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 8.72 5.89 2.03 2014-09-09 2026-03-30 2369 11.5 7.15 69.2 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 Mar 8.63 8.43 7.75 7.26 6.95 6.22 6.02 12 12 May 7.80 7.76 7.15 6.44 5.89 5.06 4.99 10 10 Sep 5.59 5.53 4.51 4.03 3.63 2.65 2.37 12 12 Dec 7.43 7.31 6.82 6.12 5.55 4.71 4.63 11 11 Statistics Calculated 2026-05-18 -
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