MBMG-120639
Montana Bureau of Mines and Geology
Located in McCone County, Montana, this groundwater monitoring location is associated with a water well in the Lower Tertiary aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| -1.5-50.0 ft | 8.0 in diameter steel casing | |
| 0.0-100.0 ft | 4.0 in diameter pvc casing | |
| 80.0-95.0 ft | 4.0 in diameter drilled holes screen | |
| 100.0-100.0 ft | 4.0 in diameter open bottom screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-1.0 ft | unknown | TOPSOIL |
| 1.0-15.0 ft | unknown | YELLOW CLAY |
| 15.0-30.0 ft | unknown | GRAY SHALE |
| 30.0-35.0 ft | unknown | GRAVEL |
| 35.0-53.0 ft | unknown | GRAY AND SHALE |
| 53.0-67.0 ft | unknown | SAND |
| 67.0-80.0 ft | unknown | GRAY SHALE |
| 80.0-95.0 ft | unknown | SAND 80 GPM |
| 95.0-100.0 ft | unknown | GRAY SHALE |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-120639 Site Number 120639 Site Type WELL Lat/Long (WGS84) 47.2992, -105.7654 Well Depth 100 Feet Elevation (NAVD88) 2576.4 ft Latitude 47.29916943 Longitude -105.7654114 Local Aquifer Name 125TGRV, TONGUE RIVER MEMBER (OF FT UNION FM.) (None) National Aquifer Name Lower Tertiary aquifers (N300LTRTRY) 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 21.40 18.82 15.17 1993-10-27 2026-03-11 112 32.4 18.60 Statistics Calculated 2026-05-16 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 -
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