MBMG-171183
Montana Bureau of Mines and Geology
Located in Custer County, Montana, this groundwater monitoring location is associated with a water well in the Upper Cretaceous aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| -2.0-660.0 ft | 6.0 in diameter steel casing | |
| 0.0-59.0 ft | 10.0 in diameter steel casing | |
| 660.0-830.0 ft | 4.5 in diameter pvc-sdr 17 casing | |
| 760.0-830.0 ft | 4.5 in diameter slots screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-58.0 ft | unknown | GRAVEL |
| 58.0-62.0 ft | unknown | CLAY |
| 62.0-90.0 ft | unknown | SAND |
| 90.0-205.0 ft | unknown | CLAY |
| 205.0-215.0 ft | unknown | COAL |
| 215.0-580.0 ft | unknown | CLAY |
| 580.0-600.0 ft | unknown | SAND (10GPM) |
| 600.0-620.0 ft | unknown | CLAY |
| 620.0-660.0 ft | unknown | SAND (20GPM) |
| 660.0-760.0 ft | unknown | CLAY |
| 760.0-830.0 ft | unknown | SAND (30GPM) |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-171183 Site Number 171183 Site Type WELL Lat/Long (NAD83) 46.4255, -105.8759 Well Depth 830 Feet Elevation (NGVD29) 2630.0 ft Latitude 46.42550284 Longitude -105.87586 Local Aquifer Name 211FHHC FOX HILLS-HELL CREEK AQUIFER (None) National Aquifer Name Upper Cretaceous aquifers (N300UPCTCS) Aquifer Type CONFINED 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 302.34 267.18 257.17 2001-01-19 2023-02-09 72 22.1 261.75 -- 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 -
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