MBMG-132734
Montana Bureau of Mines and Geology
Located in Garfield County, Montana, this groundwater monitoring location is associated with a water well in the Lower Tertiary aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-103.0 ft | 4.0 in diameter pvc-sched 40 casing | |
| 63.0-103.0 ft | 4.0 in diameter factory slotted screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-5.0 ft | unknown | SAND MEDIUM |
| 5.0-25.0 ft | unknown | SILT CLAY TAN |
| 25.0-30.0 ft | unknown | SILT CLAY GRAY |
| 30.0-35.0 ft | unknown | SILT CLAY TAN |
| 35.0-46.0 ft | unknown | SILT CLAY GRAY |
| 46.0-47.0 ft | unknown | HARD |
| 47.0-75.0 ft | unknown | SILT CLAY GRAY |
| 75.0-76.0 ft | unknown | SAND GRAY FINE TO MEDIUM MOSTLY FINE. WATER |
| 76.0-80.0 ft | unknown | SANDSTONE HARD FINE TO MEDIUM. WATER |
| 80.0-88.0 ft | unknown | SAND FINE. WATER |
| 88.0-90.0 ft | unknown | SILT CLAY GRAY |
| 90.0-93.0 ft | unknown | COAL STRINGERS |
| 93.0-103.0 ft | unknown | SILT CLAY GRAY (TONGUE RIVER) |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-132734 Site Number 132734 Site Type WELL Lat/Long (NAD83) 47.1196, -106.1042 Well Depth 103 Feet Elevation (NGVD29) 2645.0 ft Latitude 47.119618 Longitude -106.104213 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 33.07 30.75 28.73 1982-05-12 2026-03-11 5223 43.8 30.81 12.50 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 Jan 31.21 31.09 31.03 30.69 30.11 29.64 29.14 16 16 Feb 31.32 31.00 30.80 30.38 29.97 29.23 28.85 21 21 Mar 30.87 30.83 30.76 30.59 30.13 29.29 28.84 15 15 Apr 30.75 30.74 30.68 30.40 30.11 29.52 29.22 15 15 May 33.07 31.47 30.84 30.41 29.67 29.24 28.91 26 26 Jun 31.45 31.39 31.10 30.84 30.49 29.80 29.32 15 15 Jul 31.80 31.74 31.27 30.86 30.49 29.61 28.91 17 17 Aug 33.02 32.62 31.62 30.87 30.28 29.77 29.61 24 24 Sep 32.07 31.97 31.53 31.15 30.45 30.08 30.00 22 22 Oct 32.03 31.94 31.72 31.34 30.68 30.44 29.66 21 21 Nov 32.64 32.01 31.65 30.94 30.67 29.47 29.29 26 26 Dec 31.66 31.52 31.24 30.81 30.40 29.84 29.33 15 15 Statistics Calculated 2026-05-16 -
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