MBMG-135081
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 | |
|---|---|---|
| -2.0-60.0 ft | 6.0 in diameter steel casing | |
| 45.0-285.0 ft | 4.5 in diameter pvc casing | |
| 145.0-285.0 ft | 4.5 in diameter drilled holes screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | TOPSOIL |
| 2.0-8.0 ft | unknown | CLAY |
| 8.0-52.0 ft | unknown | GRAVEL |
| 52.0-58.0 ft | unknown | CLAY |
| 58.0-80.0 ft | unknown | ROCK LIMESTONE ? |
| 80.0-180.0 ft | unknown | CLAY-GRAVEL MIX |
| 180.0-210.0 ft | unknown | CLAY |
| 210.0-270.0 ft | unknown | CLAY-GRAVEL MIX |
| 270.0-282.0 ft | unknown | SANDY CLAY |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-135081 Site Number 135081 Site Type WELL Lat/Long (NAD83) 45.7546, -111.0478 Well Depth 285 Feet Elevation (NAVD88) 4781.1 ft Latitude 45.75464 Longitude -111.04784 Local Aquifer Name 120SDMS, SEDIMENTS (TERTIARY) (None) National Aquifer Name Northern Rocky Mountains Intermontane Basins aquifer systems (S100NRMTIB) Aquifer Type UNCONFINED Water-Level Well Type Trend Water-Level Well Characteristics Known Changes 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 150.45 127.67 108.68 2005-04-26 2025-09-10 3157 20.4 134.84 35.714 Statistics Calculated 2026-04-17 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 131.44 131.11 130.15 120.85 117.40 112.15 109.13 13 13 Feb 132.43 131.88 129.91 123.05 118.13 113.07 109.51 14 14 Mar 131.68 131.50 129.89 126.20 119.37 114.40 110.16 15 15 Apr 134.44 133.20 130.98 126.35 120.49 114.96 111.55 14 14 May 132.80 132.61 131.39 123.96 120.09 116.05 114.75 12 12 Jun 143.43 143.06 136.26 131.75 124.84 119.09 117.91 15 15 Jul 140.95 140.84 137.39 131.63 126.28 123.03 122.47 13 13 Aug 146.78 145.51 141.26 136.02 127.67 123.35 122.88 12 12 Sep 138.87 138.23 136.95 130.59 127.03 123.59 123.33 13 13 Oct 136.40 135.32 133.22 126.95 121.85 116.97 116.10 13 13 Nov 133.50 132.95 131.33 126.21 119.66 117.83 117.03 14 14 Dec 131.87 131.51 130.12 123.37 118.04 117.20 117.19 12 12 Statistics Calculated 2026-04-17 -
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