MBMG-36423
Montana Bureau of Mines and Geology
Located in Richland County, Montana, this groundwater monitoring location is associated with a water well in the Lower Tertiary aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-126.0 ft | 6.0 in diameter steel casing |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-6.0 ft | unknown | SOIL |
| 6.0-46.0 ft | unknown | GRAVEL |
| 46.0-100.0 ft | unknown | CLAY |
| 100.0-103.0 ft | unknown | COAL |
| 103.0-104.0 ft | unknown | CLAY |
| 104.0-107.0 ft | unknown | COAL |
| 107.0-126.0 ft | unknown | CLAY |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-36423 Site Number 36423 Site Type WELL Lat/Long (NAD83) 47.7806, -104.246 Well Depth 126 Feet Elevation (NGVD29) 2249.0 ft Latitude 47.78059 Longitude -104.24598 Local Aquifer Name 125FRUN, FORT UNION FORMATION (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 28.89 27.28 23.65 1994-04-21 2026-03-12 108 31.9 28.68 0.0 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 Feb 28.84 28.76 27.52 25.86 24.49 23.86 23.65 13 13 Mar 28.68 28.67 28.44 27.85 27.29 25.44 25.27 10 10 May 27.80 27.77 27.30 26.37 24.91 24.25 24.05 18 18 Aug 27.78 27.66 27.45 26.35 24.80 24.12 23.80 14 14 Nov 28.88 28.67 27.60 26.96 24.97 24.12 23.76 18 18 Statistics Calculated 2026-05-18 -
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