MBMG-235474
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 | |
|---|---|---|
| -3.0-3.0 ft | 8.0 in diameter a53b steel casing | |
| -2.5-63.0 ft | 4.0 in diameter pvc-sched 40 casing | |
| 62.0-77.0 ft | 4.0 in diameter screen-continuous-pvc screen | |
| 77.0-77.0 ft | 4.0 in diameter bottom cap screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-3.0 ft | unknown | LIGHT BROWN SANDY LOAM SOIL |
| 3.0-5.0 ft | unknown | LIGHT BROWN SILT |
| 5.0-9.0 ft | unknown | MEDIUM TO COARSE SAND WITH SOME GRAVEL |
| 9.0-17.0 ft | unknown | LIGHT GREY, SANDY PEBBLE GRAVEL |
| 17.0-19.0 ft | unknown | CLAYEY, SANDY PEBBLE GRAVEL |
| 19.0-28.0 ft | unknown | LIGHT BROWN CLAY |
| 28.0-36.0 ft | unknown | LIGHT BROWN SANDY CLAY |
| 36.0-71.0 ft | unknown | LIGHT BRWON CLAYSTONE |
| 71.0-77.0 ft | unknown | LIGHT BROWN CLAYSTONE WITH GRAVEL |
| 77.0-78.0 ft | unknown | SANDY PEBBLE GRAVEL |
-
Agency Montana Bureau of Mines and Geology Site Name MBMG-235474 Site Number 235474 Site Type WELL Lat/Long (NAD83) 45.8786, -111.1939 Well Depth 77 Feet Elevation (NGVD29) 4315.0 ft Latitude 45.87861 Longitude -111.19389 Local Aquifer Name 120SNGR, SAND AND GRAVEL (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 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 -
-
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 30.97 26.36 18.67 2007-04-26 2025-09-09 4510 18.4 25.88 72.22 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 27.20 26.77 26.21 25.26 24.88 23.49 19.43 17 17 Feb 27.23 27.12 26.69 25.70 25.19 24.19 22.24 16 16 Mar 27.57 27.33 26.86 26.17 25.65 25.06 24.68 16 16 Apr 27.83 27.65 26.90 26.37 26.04 23.52 23.50 17 17 May 28.07 27.96 27.41 26.74 26.31 23.21 22.67 17 17 Jun 29.87 29.31 28.60 26.97 26.40 23.86 22.11 18 18 Jul 29.78 29.78 29.24 28.23 27.21 24.49 23.91 17 17 Aug 29.45 29.26 28.29 28.00 26.84 24.40 23.20 17 17 Sep 28.39 28.22 27.77 27.17 25.51 23.27 23.22 17 17 Oct 27.04 26.98 26.48 25.27 24.86 23.68 23.23 17 17 Nov 26.68 26.64 26.24 25.40 24.50 24.17 24.17 16 16 Dec 27.20 26.82 26.42 25.69 24.82 23.47 21.48 16 16 Statistics Calculated 2026-04-17 -
Operated in cooperation with:
