MBMG-1929

Montana Bureau of Mines and Geology

Located in Judith Basin County, Montana, this groundwater monitoring location is associated with a water well in the Lower Cretaceous aquifers.

Well Construction

Depth Description
0.0-1387.0 ft 4.0 in diameter steel casing
1387.0-1620.0 ft 4.0 in diameter open hole screen
Depth Lithology Description
0.0-28.0 ft unknown OVERBURDEN- BOULDERS AND GRAVEL
28.0-82.0 ft unknown BLUE SHALE AND SANDSTONE
82.0-193.0 ft unknown BLUE SHALE
193.0-427.0 ft unknown BLUE AND GRAY SHALE WITH LAYERS AND THIN STREAKS
427.0-456.0 ft unknown HARD SANDY SHALE
456.0-490.0 ft unknown GRAY SHALE WITH STREAKS OF BENTONITE
490.0-666.0 ft unknown ALT LAYERS GRAY SHALE AND SANDY GRAY SHALE
666.0-695.0 ft unknown HARD SANDSTONE
695.0-785.0 ft unknown BLUE SHALE- HARD SANDSTONE LAYERS SOFT GRAY SHALE
785.0-940.0 ft unknown LAYERS OF SANDSTONE- BENTONITE AND GRAY SHALE
940.0-1160.0 ft unknown GRAY AND BLUE SHALE
1160.0-1330.0 ft unknown RED SHALE
1330.0-1387.0 ft unknown RED SHALE WITH LAYERS HARD TO MED SOFT SANDSTONE SMALL AMOUNT WATER
1387.0-1520.0 ft unknown RED SANDSTONE AND SHALE
1520.0-1585.0 ft unknown RED SHALE WITH LAYERS SANDSTONE
1585.0-1620.0 ft unknown COARSE SANDSTONE

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