MBMG-1575
Montana Bureau of Mines and Geology
Located in Musselshell County, Montana, this groundwater monitoring location is associated with a water well in the Lower Tertiary aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-152.0 ft | 4.0 in diameter pvc casing | |
| 142.0-152.0 ft | 4.0 in diameter saw slots screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | DARK BROWN SOIL CLAYEY SILT |
| 2.0-5.0 ft | unknown | LIGHT BROWN CLAYEY SILTSTONE |
| 5.0-13.0 ft | unknown | LIGHT BROWN CLAYEY FINE GRAINED SANDSTONE |
| 13.0-18.0 ft | unknown | LIGHT BROWN-GRAY SILTY CLAY LIGHT BROWN-GRAY CLAYEY VERY FINE GRAINED SS DAMP |
| 20.0-20.0 ft | unknown | W/SOME LIGHT GRAY SILTY CLAY |
| 20.0-22.0 ft | unknown | LIGHT SILTY CLAY; TRACE OF COAL @ 22' |
| 22.0-26.0 ft | unknown | LIGHT GRAY SILTY CLAY LIGHT GRAY CLAYEY FINE GRAINED SS SOME SILTY CLAY |
| 26.0-34.0 ft | unknown | CHIPS IN CUTTINGS. DAMP FROM 31 TO 34 FEET MEDIUM GRAY SILTY CLAY TRACES OF COAL & DARK GRAY |
| 34.0-42.0 ft | unknown | CARBONACEOUS CLAY @ 36' AND 41'. |
| 42.0-45.0 ft | unknown | LIGHT GRAY CLAYEY FINE GRAINED SS DAMP |
| 45.0-48.0 ft | unknown | LIGHT TO MEDIUM GRAY SILTY CLAY |
| 48.0-57.0 ft | unknown | LIGHT GRAY CLAYEY FINE GRAINED SS DAMP: FEW CLAYEY SILTSTONE CHIPS IN CUTTINGS |
| 57.0-60.0 ft | unknown | LIGHT GRAY VERY FINE GRAINED SS HARD |
| 60.0-60.5 ft | unknown | COAL AND CARBONACEOUS SHALE |
| 60.5-68.0 ft | unknown | LIGHT GRAY FINE GRAINED CLAYEY SS DAMP |
| 68.0-69.0 ft | unknown | MEDIUM GRAY SILTY CLAY & CARBONACEOUS SHALE |
| 69.0-73.0 ft | unknown | COAL |
| 73.0-75.0 ft | unknown | DARK GRAY SILTY CLAY |
| 75.0-80.0 ft | unknown | LIGHT GRAY CLAYEY FINE GRAINED SS DAMP |
| 80.0-81.0 ft | unknown | DARK GRAY CARBONACEOUS SHALE |
| 81.0-82.0 ft | unknown | COAL |
| 82.0-87.0 ft | unknown | LIGHT GRAY SILTY CLAY |
| 87.0-99.0 ft | unknown | LIGHT BROWN-GRAY CLAYEY FINE GRAINED SS DAMP |
| 99.0-100.0 ft | unknown | LIGHT GREEN-GRAY CLAYEY SILTSTONE LIGHT GRAY CLAYEY FINE GRAINED SS DAMP. 30% |
| 109.0-109.0 ft | unknown | SILTY CLAY CHIPS IN CUTTINGS |
| 109.0-112.0 ft | unknown | MEDIUM GRAY SILTY CLAY LIGHT GRAY CLAYEY FINE GRAINED SS AND 30%-40% MED- |
| 116.0-116.0 ft | unknown | IUM GRAY SILTY CLAY |
| 116.0-118.0 ft | unknown | MEDIUM GRAY SILTY CLAY |
| 118.0-121.0 ft | unknown | MEDIUM GRAY SILTY FINE GRAINED SS |
| 121.0-123.0 ft | unknown | COAL |
| 123.0-124.0 ft | unknown | DARK GRAY SILTY CLAY & CARBONACEOUS SHALE |
| 124.0-136.0 ft | unknown | LIGHT TO MEDIUM GRAY CLAYEY VERY FINE GRAINED SS; COARSENING DOWNWARD FINE GRAINED BY 130' |
| 136.0-138.0 ft | unknown | LIGHT TO MEDIUM GRAY SILTY CLAY |
| 138.0-140.0 ft | unknown | LIGHT GRAY SLIGHTLY CLAYEY FINE GRAINED SS |
| 140.0-141.0 ft | unknown | SAME AS ABOVE - BUT W/MORE CLAY |
| 141.0-142.0 ft | unknown | CARBONACEOUS CLAY |
| 142.0-152.0 ft | unknown | COAL (MAMMOTH SEAM) DRY @ TOP DAMP IN BOTTOM 2' |
| 152.0-152.0 ft | unknown | THIN PARTING @ 146' |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-1575 Site Number 1575 Site Type WELL Lat/Long (NAD83) 46.3592, -108.4412 Well Depth 152 Feet Elevation (NAVD88) 3824.3 ft Latitude 46.359151 Longitude -108.441229 Local Aquifer Name 125MMCB, MAMMOTH COAL OF THE FT UNION FM. (None) National Aquifer Name Lower Tertiary aquifers (N300LTRTRY) Aquifer Type UNCONFINED Water-Level Well Type Trend Water-Level Well Characteristics Suspected / Anticipated Changes 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 1982-03-15 18:00:00 MST Bicarbonate 839. mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Carbonate 0.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Chloride 15.6 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Fluoride 1.3 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Nitrate as Nitrogen .68 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Sulfate 805. mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Calcium 18.5 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Iron .027 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Magnesium 7.2 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Manganese .062 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Potassium 5.8 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Silica 6.5 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Sodium 677. mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST pH 7.77 None Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1982-03-15 18:00:00 MST Lithium 48. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Bicarbonate 822.89 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Carbonate 0.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Chloride 10.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Fluoride 1.11 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Nitrate as Nitrogen .15 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Orthophosphate <.025 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Sulfate 700. mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Calcium 16.1 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Iron .257 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Magnesium 5.7 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Manganese .015 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Potassium 7.3 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Silica 7.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Sodium 610. mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST pH 8.04 None Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Aluminum 184. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Antimony <2. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Arsenic 1.1 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Barium 9.7 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Beryllium <2. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Boron 89. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Bromide <50. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Cadmium <2. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Chromium 3.5 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Cobalt <2. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Copper 7.9 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Lead <2. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Lithium 65. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Molybdenum <10. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Nickel <2. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Selenium <1. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Silver <1. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Strontium 1634. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Titanium <10. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Vanadium <5. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Zinc 15.1 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 1994-06-02 14:00:00 MST Zirconium <20. ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Bicarbonate 678.3 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Carbonate 0.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Chloride <10.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Fluoride <1.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Nitrate as Nitrogen <1.0 P mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Orthophosphate <1.0 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Sulfate 682 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Calcium 18.7 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Iron 0.016 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Magnesium 10.2 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Manganese 0.003 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Potassium 4.59 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Silica 6.60 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Sodium 527 mg/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST pH 8.14 None Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Uranium <3 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Aluminum <30 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Antimony <10 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Arsenic <5 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Barium 10.3 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Beryllium <2 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Boron 72.1 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Bromide <1000 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Cadmium <1 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Chromium <10 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Cobalt <2 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Copper <5 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Lead <10 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Lithium 62.0 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Molybdenum <10 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Nickel <2 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Selenium <5 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Silver <5 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Strontium 2162 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Thallium <25 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Titanium <1 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Vanadium <25 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Zinc 9.16 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG 2005-04-06 14:00:00 MST Zirconium <2 ug/L Actual DISSOLVED EPA MBMG BAILED MBMG BAILED Sample MBMG -
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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 148.06 144.39 141.60 1981-12-03 2026-04-21 252 44.3 146.48 24.324 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 Jan 147.65 147.04 146.74 144.65 143.95 143.43 141.93 33 33 Feb 146.54 145.75 144.98 144.05 143.17 142.11 141.91 15 15 Mar 146.03 145.27 144.49 143.98 143.42 141.88 141.60 15 15 Apr 148.06 147.08 146.37 144.99 144.08 143.38 142.24 36 36 May 146.20 145.80 144.45 144.07 143.50 142.43 142.15 12 12 Jun 146.62 146.25 144.87 144.17 143.46 142.38 141.88 18 18 Jul 147.33 147.17 146.58 144.79 143.79 143.26 141.89 33 33 Aug 146.45 145.85 144.53 143.68 143.33 142.22 142.00 13 13 Sep 147.80 146.17 144.81 144.10 143.42 142.43 142.12 17 17 Oct 147.45 147.19 146.63 145.11 144.20 143.66 142.49 32 32 Nov 144.49 144.40 144.01 143.69 143.03 142.24 142.12 11 11 Dec 145.98 145.91 144.79 143.99 143.61 142.47 142.30 14 14 Statistics Calculated 2026-05-18 -
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