MBMG-191532

Montana Bureau of Mines and Geology

Located in Lewis and Clark 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
0.0-100.0 ft 4.0 in diameter pvc casing
90.0-100.0 ft 4.0 in diameter screen-pvc screen
Depth Lithology Description
0.0-20.0 ft unknown GRAVEL WITH FINE SAND SILT
20.0-25.0 ft unknown VERY COARSE SAND WITH GRAVEL AND SILT
25.0-50.0 ft unknown SILT CLAY WITH 20 PERCENT GRAVEL COARSE SAND
50.0-55.0 ft unknown FINE SAND SILT WITH MEDIUM SAND
55.0-65.0 ft unknown GRAVEL 80 PERCENT CLAY 20 PERCENT
65.0-70.0 ft unknown 75 PERCENT VERY COARSE SAND 20 PERCENT GRAVEL 10 PERCENT SILT CLAY
70.0-80.0 ft unknown 70 PERCENT VERY COARSE SAND 20 PERCENT GRAVEL 10 PERCENT SILT CLAY
80.0-100.0 ft unknown 90 PERCENT VERY COARSE SAND CLASTS CONSIST OF RED ANGULAR ARGILLITE

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