MBMG-149986
Montana Bureau of Mines and Geology
Located in Hill County, Montana, this groundwater monitoring location is associated with a water well in the Alluvial aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| -1.5-55.5 ft | 6.0 in diameter steel casing | |
| 52.5-55.5 ft | 5.0 in diameter screen continuous pvc screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | TOPSOIL |
| 2.0-16.0 ft | unknown | SANDY BROWN CLAY |
| 16.0-30.0 ft | unknown | TIGHT BROWN CLAY |
| 30.0-41.0 ft | unknown | SANDY GRAY CLAY |
| 41.0-48.0 ft | unknown | GRAY CLAY |
| 48.0-51.0 ft | unknown | GRAY SAND |
| 51.0-56.0 ft | unknown | FINE GRAY SAND LARGE GRAVEL WATER CLAY |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-149986 Site Number 149986 Site Type WELL Lat/Long (NAD83) 48.5817, -109.6282 Well Depth 52.5 Feet Elevation (NGVD29) 2495.0 ft Latitude 48.5817 Longitude -109.62824 Local Aquifer Name 110ALVM, ALLUVIUM (QUATERNARY) (None) National Aquifer Name Alluvial aquifers (N100ALLUVL) 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 -
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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 39.42 35.51 30.58 1996-02-15 2026-04-07 98 30.2 34.58 50.00 Statistics Calculated 2026-05-18 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 39.10 38.88 38.36 34.66 32.91 31.82 31.60 13 13 Apr 38.65 38.63 38.50 34.58 33.65 31.72 31.60 11 11 Jul 38.51 38.36 37.98 36.26 35.33 33.27 32.66 14 14 Oct 39.02 38.72 37.04 34.66 32.79 31.51 30.90 13 13 Statistics Calculated 2026-05-18 -
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