MBMG-230551
Montana Bureau of Mines and Geology
Located in Gallatin 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 | |
|---|---|---|
| -2.3-98.1 ft | 6.0 in diameter a53b steel casing |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-50.0 ft | unknown | COURSE OBSIDIAN SANDS |
| 50.0-53.0 ft | unknown | CLAY |
| 53.0-74.0 ft | unknown | FINE TO MEDIUM OBSIDIANS SAND, SOME CLAYS |
| 74.0-100.0 ft | unknown | STRATIFIED FINE TO MED. OBSIDIAN SAND AND SANDS & GRAVEL |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-230551 Site Number 230551 Site Type WELL Lat/Long (NAD83) 44.7601, -111.1783 Well Depth 100 Feet Elevation (NAVD88) 6559.729 ft Latitude 44.7601409 Longitude -111.1783232 Local Aquifer Name 110SNGR, SAND AND GRAVEL (QUATERNARY) (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 13.62 12.64 10.00 2007-09-07 2025-09-24 81 18.0 12.84 25.00 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 Jun 12.99 12.91 12.49 12.19 11.66 10.81 10.79 13 13 Sep 13.35 13.29 12.84 12.63 12.42 11.23 11.20 11 11 Dec 13.36 13.31 12.92 12.74 11.75 11.60 11.58 11 11 Statistics Calculated 2026-05-16 -
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