MBMG-6276

Montana Bureau of Mines and Geology

Located in Lake 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
0.0-80.0 ft 6.0 in diameter steel casing
40.0-65.0 ft 6.0 in diameter perforated casing screen
Depth Lithology Description
0.0-17.0 ft unknown SAND-VERY FINE TO COARSE & MED TO COARSE GRAY- SUB-ROUNDED GRAVEL;DRY
17.0-31.0 ft unknown CLAY MEDIUM-BROWN & LIGHT-TAN SILT;DRY
31.0-73.0 ft unknown GRAVEL-FINE TO MEDIUM-GRAY-ANGULAR-POORLY SORTED; CONTAINS VERY LITTLE SAND;SATURATED
73.0-128.0 ft unknown SILTSTONE LIGHT-TAN;CONTAINS LAYERS OF BROWN & RED SILTSTONE & VERY SM AMT OF GRAVEL;MODERATELY HARD
128.0-200.0 ft unknown SILTSTONE BROWNISH-ORANGE TO ORANGE AND RED CLAYSTONE;CONTAINS SM AMT OF FINE TO MED GRAVEL; SOME WATER (5 TO 10 GPM) WITH 120 FT OF OPEN HOLE

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