MBMG-43880
Montana Bureau of Mines and Geology
Located in Hill County, Montana, this groundwater monitoring location is associated with a water well in the Upper Cretaceous aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-126.8 ft | 6.0 in diameter steel casing | |
| 100.0-208.0 ft | 4.0 in diameter plastic casing | |
| 130.0-207.0 ft | 4.0 in diameter slots screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-18.0 ft | unknown | BROWN SANDY SILT |
| 18.0-22.0 ft | unknown | WATER STRATA - BROWN SAND AND FINE GRAVEL |
| 22.0-25.0 ft | unknown | FEW BOULDERS AND COBBLES |
| 25.0-60.3 ft | unknown | BROWN SANDY TO CLAYEY SILT |
| 60.3-121.8 ft | unknown | BLUE CLAYEY SHALE |
| 121.8-126.8 ft | unknown | WATER STRATA - FINE TO MEDIUM BROWN SAND |
| 126.8-192.0 ft | unknown | BLUISH GRAY SHALE |
| 192.0-208.0 ft | unknown | GRAY SANDSTONE WITH WATER |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-43880 Site Number 43880 Site Type WELL Lat/Long (NAD83) 48.5646, -109.5473 Well Depth 208 Feet Elevation (NGVD29) 2470.0 ft Latitude 48.56457 Longitude -109.54729 Local Aquifer Name 211JDRV JUDITH RIVER FORMATION (OF MONTANA GROUP) (None) National Aquifer Name Upper Cretaceous aquifers (N300UPCTCS) 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 21.48 19.14 14.92 1995-07-16 2025-01-15 100 29.5 19.82 23.08 Statistics Calculated 2025-04-22 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 20.21 20.12 19.78 19.57 18.64 16.93 16.73 12 12 Apr 21.48 21.35 20.48 19.48 18.90 15.67 14.92 11 11 Jun 19.30 19.25 18.99 18.78 17.66 15.58 15.36 12 12 Jul 19.73 19.69 19.13 18.69 17.85 16.15 15.99 10 10 Sep 20.38 20.33 19.32 18.54 17.92 16.81 16.73 10 10 Oct 20.26 20.25 20.11 19.71 19.36 17.72 17.46 11 11 Statistics Calculated 2025-04-22 -
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