MBMG-136964
Montana Bureau of Mines and Geology
Located in Ravalli 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 | |
|---|---|---|
| 0.0-40.0 ft | 6.0 in diameter steel casing | |
| 30.0-40.0 ft | 6.0 in diameter slots screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | TOPSOIL |
| 2.0-21.0 ft | unknown | INTERMITTENT LAYERS - SAND - GRAVEL - SOME BOULDERS |
| 21.0-40.0 ft | unknown | INTERMITTENT LAYERS - SAND - GRAVEL - WATER BEARING |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-136964 Site Number 136964 Site Type WELL Lat/Long (NAD83) 46.2554, -114.1552 Well Depth 40 Feet Elevation (NAVD88) 3560.43 ft Latitude 46.25538698 Longitude -114.1551702 Local Aquifer Name 112TRRC, TERRACE DEPOSITS (PLEISTOCENE) (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 18.72 13.25 5.19 1970-09-04 2025-10-30 14078 55.1 13.64 0.0 Statistics Calculated 2026-01-16 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 Jan 16.82 16.49 16.10 15.36 14.84 14.01 12.77 50 50 Feb 17.61 17.04 16.71 16.14 15.63 14.74 13.39 51 51 Mar 18.27 17.59 17.35 16.72 16.24 15.22 13.95 53 53 Apr 18.49 18.05 17.77 17.09 16.61 15.80 14.79 53 53 May 18.39 17.95 17.20 16.12 14.91 9.90 7.57 53 53 Jun 15.00 12.86 10.46 8.54 6.71 6.00 5.19 53 53 Jul 10.48 9.86 9.18 7.82 6.41 5.87 5.55 53 53 Aug 10.47 10.04 9.15 8.13 6.47 5.90 5.41 51 51 Sep 11.17 10.40 9.60 8.63 7.34 6.61 5.78 53 53 Oct 12.73 11.89 11.15 10.23 9.71 9.12 7.57 52 52 Nov 14.30 13.64 13.23 12.55 11.95 11.77 10.88 50 50 Dec 15.83 15.31 14.80 13.99 13.60 13.22 12.45 53 53 Statistics Calculated 2026-01-16 -
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