MBMG-169098
Montana Bureau of Mines and Geology
Located in Flathead County, Montana, this groundwater monitoring location is associated with a water well in the Northern Rocky Mountains Intermontane Basins aquifer systems.
Well Construction
| Depth | Description | |
|---|---|---|
| -2.5-544.0 ft | 8.0 in diameter a53b steel casing | |
| 452.0-470.0 ft | 8.0 in diameter slots screen | |
| 479.0-489.0 ft | 8.0 in diameter slots screen | |
| 517.0-539.0 ft | 8.0 in diameter slots screen | |
| 492.0-506.0 ft | 8.0 in diameter slots screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-1.0 ft | unknown | TOPSOIL |
| 1.0-45.0 ft | unknown | FINE TAN SAND |
| 45.0-55.0 ft | unknown | TAN SILT-SOME SMALL GRAVEL |
| 55.0-61.0 ft | unknown | TAN SILT & SAND & SMALL TO MEDIUM GRAVEL |
| 61.0-84.0 ft | unknown | TAN SAND & GRAVEL & WATER CASED OF WATER |
| 84.0-128.0 ft | unknown | TAN CLAY & SMALL GRAVEL |
| 128.0-138.0 ft | unknown | BROWN CLAY & GRAVEL |
| 138.0-163.0 ft | unknown | TAN CLAY-GRAVEL-SOME WATER |
| 163.0-181.0 ft | unknown | TAN-TANNISH BROWN COLORED WATER & COARSE SAND SMALL GRAVEL & CAVING IN TO DRIVE SHOE |
| 181.0-197.0 ft | unknown | BROWN COLOR-CEMENTED SMALL GRAVEL-LESS WATER |
| 197.0-204.0 ft | unknown | TAN CLAY & SMALL GRAVEL |
| 204.0-208.0 ft | unknown | TAN COLOR-SMALL TO MEDIUM GRAVEL-WATER ESTIMATED 70-80 GPM AT 205 FEET-CLEARED GOOD IN 2-3 MINUTES |
| 208.0-214.0 ft | unknown | TAN COLOR-WATER-100 GPM ESTIMATED-SOFTER TO DRILL BORE HOLE STAYED OPEN |
| 214.0-226.0 ft | unknown | TAN COLORED WATER-EST 70-80 GPM-HARDER TO DRILL DOES CLEAR IN 3-4 MIN & CEMENTED GRAVEL |
| 226.0-228.0 ft | unknown | VERY HARD TO DRILL & SLOW TO DRIVE PIPE & TAN COLORED WATER & 10-20 GPM SMALL GRAVEL & OPEN HOLE |
| 228.0-232.0 ft | unknown | SMALL TO MEDIUM GRAVEL-WATER 60-70 GPM ESTIMATED OPEN HOLE |
| 232.0-235.0 ft | unknown | TAN COLOR WATER-SHARP GRAVEL-70 GPM-OPEN HOLE |
| 235.0-242.0 ft | unknown | TAN COLOR-WATER 40-50 GPM-SHARP GRAVEL-OPEN HOLE |
| 242.0-245.0 ft | unknown | HARD TO DRILL & 20-30 GPM & TAN COLOR-OPEN HOLE |
| 245.0-254.0 ft | unknown | SOFT TO DRILL-SLOTS OF WATER-100 GPM ESTIMATED CLEARED GOOD & SOME MEDIUM GRAVEL & SOME BROWN SAND & OPEN HOLE |
| 254.0-255.0 ft | unknown | BROWN SAND & SMALL TO MEDIUM GRAVEL-40-50 GPM-HARD TO DRILL |
| 255.0-278.0 ft | unknown | TAN COLOR-MORE WATER-100+ GPM-CAVING IN & HEAVING UP CASING-COARSE BROWN SAND-SMALL TO MEDIUM GRAVEL |
| 278.0-281.0 ft | unknown | 70-80 GPM-CEMENTED GRAVEL-SMALL GRAVEL-BROWN SAND BROWN COLOR WATER-OPEN HOLE |
| 281.0-283.0 ft | unknown | 10-20 GPM-SMALL GRAVEL-BROWN SAND & CEMENTED OPEN HOLE |
| 283.0-286.0 ft | unknown | 80-100 GPM-BROWN SAND & SMALL GRAVEL & LIGHT TAN COLOR WATER-OPEN HOLE |
| 286.0-288.0 ft | unknown | 50 GPM-BROWN SAND & SMALL GRAVEL & OPEN HOLE |
| 288.0-294.0 ft | unknown | 40-50 GPM OPEN HOLE & BROWN SAND & SMALL GRAVEL |
| 294.0-303.0 ft | unknown | 100+ GPM-BROWN SAND & SMALL GRAVEL & CAVING FORMATION |
| 303.0-306.0 ft | unknown | 20 GPM-OPEN HOLE & SMALL CLEAN GRAVEL |
| 306.0-316.0 ft | unknown | DARK BROWN COLOR WATER & BROWN SAND & SMALL GRAVEL OPEN HOLE-40-50 GPM |
| 316.0-357.0 ft | unknown | BROWN SAND & SMALL GRAVEL & MORE WATER-80-100 GPM SOFTER TO DRILL & CAVING & HEAVING UP CASING |
| 357.0-359.0 ft | unknown | YELLOW COLOR WATER & SMALL CLEAN GRAVEL-100 GPM HEAVING UP CASING 3-5 FEET |
| 359.0-365.0 ft | unknown | TAN COLOR-100 GPM-HEAVING UP CASING 3-4 FEET BROWN SAND & SMALL GRAVEL |
| 365.0-373.0 ft | unknown | VERY DARK BROWN COLOR-100 GPM MORED BROWN SAND & SMALL GRAVEL-HEAVING UP CASING 2-3 FEET |
| 373.0-375.0 ft | unknown | TAN COLOR-OPEN HOLE-LESS WATER-50-60 GPM |
| 375.0-379.0 ft | unknown | BROWN SAND & SMALL GRAVEL & BROWN COLOR WATER 100+ GPM CAVING IN TO DRIVE SHOE |
| 379.0-385.0 ft | unknown | TAN COLOR-100+ GPM BROWN SAND & SMALL GRAVEL |
| 385.0-387.0 ft | unknown | DRILLED SOFT & OPEN HOLE-CASED OFF MOST WATER 20-30 GPM WATER CLEARED GOOD |
| 387.0-397.0 ft | unknown | VERY SOFT TO DRILL & BROWN SAND & SMALL GRAVEL 100+ GPM STAYING OPEN |
| 397.0-407.0 ft | unknown | DARK BROWN-LOTS OF WATER-100+ GPM-200 GPM-405 FEET OPEN HOLE |
| 407.0-409.0 ft | unknown | SOFT TO DRILL & OPEN HOLE-30 GPM |
| 409.0-425.0 ft | unknown | SOFT TO DRILL & BROWN COLOR WATER-100+ GPM |
| 425.0-435.0 ft | unknown | YELLOW COLOR-200 GPM-SAND & GRAVEL & CAVING FORMATION |
| 435.0-437.0 ft | unknown | CASED OFF SOME WATER. SMALL SHARP GRAVEL-50-60 GPM |
| 437.0-440.0 ft | unknown | NOT MUCH WATER-20 GPM |
| 440.0-442.0 ft | unknown | YELLOW COLOR & SMALL GRAVEL-OPEN HOLE 50-60 GPM |
| 442.0-446.0 ft | unknown | YELLOW COLOR & SAND & GRAVEL-MORE WATER-100+ GPM |
| 446.0-447.0 ft | unknown | LESS WATER- 50 GPM. HOLE STAYS OPEN |
| 447.0-449.0 ft | unknown | 100+ GPM HEAVING 2-3 FT. SOME SAND & SMALL GRAVEL |
| 449.0-451.0 ft | unknown | OPEN HOLE-20 GPM |
| 451.0-452.0 ft | unknown | OPEN HOLE-100+ GPM |
| 452.0-454.0 ft | unknown | LOTS WATER-100+ GPM. TAN COLOR WATER-CLEARING GOOD |
| 454.0-455.0 ft | unknown | CASED OFF WATER. SHARP SMALL GRAVEL-OPEN HOLE |
| 455.0-464.0 ft | unknown | 100-200 GPM. HEAVING & CAVING IN. TAN COLOR- CLEARING GOOD |
| 464.0-467.0 ft | unknown | 100+ GPM. OPEN HOLE-CLEARING GOOD. SAND-SMALL GRAVEL |
| 467.0-470.0 ft | unknown | 100-200 GPM. CLEARING GOOD. CAVING & HEAVING UP CASING WHILE DRIVING |
| 470.0-472.0 ft | unknown | CASED OFF SOME WATER-20-30 GPM. OPEN HOLE WHILE DRILLING. HEAVING WHILE DRIVING CASING. |
| 472.0-476.0 ft | unknown | 100-200 GPM HEAVING |
| 476.0-478.0 ft | unknown | LESS WATER-60-70 GPM. OPEN HOLE & SAND & GRAVEL GRAVEL SAME |
| 478.0-490.0 ft | unknown | 100-200 GPM. CAVING AND HEAVING UP. SAND & GRAVEL |
| 490.0-492.0 ft | unknown | CASED OFF MOST WATER-30-40 GPM. OPEN HOLE |
| 492.0-496.0 ft | unknown | 200 GPM ESTIMATED. MORE WHITE OR LIGHT COLORED SAND THAN BEFORE-YELLOW COLORED WATER-OPEN HOLE WHILE DRILLING-HEAVING & CAVING IN WHILE DRIVING CASING |
| 496.0-498.0 ft | unknown | YELLOW COLOR-OPEN HOLE-100-200 GPM |
| 498.0-501.0 ft | unknown | TAN COLOR-200 GPM. HEAVING UP 3-4 FT. SAND & SMALL GRAVEL. SOME 1IN TO 2IN GRAVELS |
| 501.0-503.0 ft | unknown | TAN COLOR-70-80 GPM. STAYING OPEN WHILE DRILLING HEAVING WHILE DRIVING CASING |
| 503.0-506.0 ft | unknown | 200 GPM-HEAVING UP CASING 2-3 FT. TAN COLOR. |
| 506.0-510.0 ft | unknown | TANNISH-YELLOW COLOR-100+ GPM. HOLE STAYING OPEN TURNING MORE YELLOW WHILE DEVELOPING-MORE LIGHT BROWN SAND |
| 510.0-513.0 ft | unknown | CASED OFF WATER AT FIRST-THEN IT CAME IN AGAIN 100+ GPM YELLOW COLOR |
| 513.0-514.0 ft | unknown | STAYING OPEN-80-100 GPM-CLEARING GOOD |
| 514.0-517.0 ft | unknown | 40-50 GPM. LIGHT TAN COLOR. CLEARING UP GOOD; STAYING OPEN. HEAVING WHILE DRIVING CASING |
| 517.0-519.0 ft | unknown | MORE WATER-70-80 GPM. LESS SAND |
| 519.0-524.0 ft | unknown | MORE WATER-200-300 GPM. LESS SAND-SOME MEDIUM GRAVEL. CLEARING GOOD |
| 524.0-527.0 ft | unknown | WATER CASED OFF AT FIRST-THEN IT CAME IN-60-70 GPM OPEN HOLE-TNA COLOR-SMALL GRAVEL-CLEARING SOME- CAVING WHILE DRIVING CASING |
| 527.0-531.0 ft | unknown | SMALL GRAVEL-CLEARING UP GOOD-CAVING IN SOME-100+ GPM |
| 531.0-533.0 ft | unknown | SMALL GRAVEL-OPEN BORE HOLE-80-100 GPM. CLEARING GOOD |
| 533.0-542.0 ft | unknown | SMALL GRAVEL-YELLOW COLOR-CLEARING GOOD-100-200 GPM. OPEN BORE HOLE-CAVING IN WHILE DRIVING CASING |
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Agency Montana Bureau of Mines and Geology Site Name MBMG-169098 Site Number 169098 Site Type WELL Lat/Long (NAD83) 48.2261, -114.3283 Well Depth 544 Centimeters Elevation (NAVD88) 3009.0 ft Latitude 48.22613844 Longitude -114.3283472 Local Aquifer Name 112ALVM ALLUVIUM (PLEISTOCENE) (None) National Aquifer Name Northern Rocky Mountains Intermontane Basins aquifer systems (S100NRMTIB) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Known 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 -
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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 116.40 98.89 86.45 1998-06-20 2026-05-17 8218 27.9 98.92 28.57 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 100.90 100.64 99.19 97.49 95.85 94.28 89.15 28 28 Feb 100.30 99.79 98.54 96.89 95.59 93.76 89.24 28 28 Mar 99.40 99.17 98.05 96.54 95.18 94.25 88.68 27 27 Apr 99.57 98.69 97.81 95.96 94.97 93.32 89.15 28 28 May 100.22 99.56 99.24 98.09 95.58 93.96 90.60 27 27 Jun 108.83 106.98 101.94 99.87 97.11 94.57 86.95 27 27 Jul 114.62 112.54 110.41 106.14 102.43 98.51 87.35 27 27 Aug 115.26 112.15 110.65 107.81 105.70 104.18 97.15 28 28 Sep 110.89 110.04 107.43 104.19 103.16 99.95 94.76 27 27 Oct 105.76 104.81 102.87 100.77 98.67 96.59 91.23 27 27 Nov 103.45 103.11 101.21 99.15 97.48 95.73 90.67 28 28 Dec 101.91 101.36 99.61 98.07 96.43 94.68 89.85 28 28 Statistics Calculated 2026-05-18 -
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