MBMG-107951
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 | |
|---|---|---|
| 0.0-20.0 ft | 12.0 in diameter steel casing | |
| -2.0-81.0 ft | 8.0 in diameter steel casing | |
| 81.0-225.0 ft | 8.0 in diameter open hole screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-3.0 ft | unknown | TOPSOIL |
| 3.0-21.0 ft | unknown | BOULDERS |
| 21.0-35.0 ft | unknown | GRAVEL CLAY |
| 35.0-39.0 ft | unknown | GRAVEL BOULDERS; WATER |
| 39.0-57.0 ft | unknown | HARDPAN |
| 57.0-58.0 ft | unknown | GRAVEL (L. WATER) |
| 58.0-80.0 ft | unknown | HARDPAN |
| 80.0-138.0 ft | unknown | HARDPAN (V.L. WATER) |
| 138.0-150.0 ft | unknown | HARD CLAY |
| 150.0-180.0 ft | unknown | CLAY SAND & GRAVEL |
| 180.0-194.0 ft | unknown | HARD CLAY |
| 194.0-196.0 ft | unknown | GRAVEL LENSE (WATER) |
| 196.0-205.0 ft | unknown | CLAY |
| 205.0-216.0 ft | unknown | HARDPAN |
| 216.0-225.0 ft | unknown | HARD DARK CLAY |
-
Agency Montana Bureau of Mines and Geology Site Name MBMG-107951 Site Number 107951 Site Type WELL Lat/Long (NAD83) 45.452, -112.1925 Well Depth 225 Feet Elevation (NAVD88) 5133.727 ft Latitude 45.452025298 Longitude -112.192525903 Local Aquifer Name 120SDMS (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 -
-
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 20.57 15.38 7.70 1992-10-26 2026-04-02 7995 33.5 19.99 7.692 Statistics Calculated 2026-05-19 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 19.22 19.14 18.07 17.47 15.41 14.75 14.63 21 21 Feb 19.64 19.47 18.37 17.44 15.81 15.09 15.04 20 20 Mar 19.93 18.87 18.52 18.07 16.44 15.29 14.90 32 32 Apr 20.25 19.91 18.84 18.14 16.76 15.57 15.48 25 25 May 19.05 18.41 17.22 16.25 14.66 13.99 13.25 25 25 Jun 16.18 14.33 14.12 13.69 13.11 12.36 7.70 31 31 Jul 15.30 14.40 14.05 13.47 13.08 12.70 11.87 25 25 Aug 15.35 15.22 14.71 13.95 13.53 13.05 12.37 25 25 Sep 16.30 15.75 15.08 14.35 13.67 13.21 12.17 32 32 Oct 17.43 16.91 16.13 15.35 14.36 13.53 12.98 25 25 Nov 18.03 17.95 16.94 16.13 14.95 14.23 13.45 21 21 Dec 18.66 18.37 17.43 16.78 15.18 14.43 12.73 34 34 Statistics Calculated 2026-05-19 -
Operated in cooperation with:
