MBMG-4248

Montana Bureau of Mines and Geology

Located in Daniels County, Montana, this groundwater monitoring location is associated with a water well in the Lower Tertiary aquifers.

Well Construction

Depth Description
0.0-194.0 ft 4.0 in diameter pvc casing
185.0-194.0 ft 4.0 in diameter saw slots screen
Depth Lithology Description
0.0-4.0 ft unknown TILL BROWN TO BROWN-GRAY SANDY INTERCALATED OXIDIZED COARSE SAND & FINE GRAVEL CALCAREOUS
4.0-10.0 ft unknown GRAVEL FINE TO COARSE
10.0-20.0 ft unknown CLAY YELLOW SILTY SLIGHTLY COHESIVE CALCAREOUS
20.0-27.0 ft unknown CLAY GRAY VERY COHESIVE STICKY CARBONACEOUS MATERIAL THROUGHOUT CALCAREOUS
27.0-53.0 ft unknown CLAY YELLOW TO YELLOW-GRAY SILTY STICKY CALCAREOUS
53.0-56.0 ft unknown CLAY BLUE TO BLUE-GREEN PLASTIC NON-CALCAREOUS
56.0-60.0 ft unknown CLAY DARK BROWN STICKY SLIGHTLY SILTY NON- CALCAREOUS ORGANIC CONTAINS SMALL 6 IN. LIGNITE SEAMS
60.0-86.0 ft unknown CLAY GRAY SILTY SOFT TO SLIGHTLY COHESIVE STICKY STRONGLY CALCAREOUS
86.0-88.0 ft unknown SHALE GRAY CONSOLIDATED CALCAREOUS
88.0-95.0 ft unknown CLAY GRAY SLIGHTLY SILTY COHESIVE NON-CALCAREOUS
95.0-97.0 ft unknown LIGNITE
97.0-105.0 ft unknown CLAY GRAY-GREEN SLIGHTLY COHESIVE NON-CALCAREOUS
105.0-109.0 ft unknown CLAY BROWN HIGHLY CARBONACEOUS SOFT SILTY NON- CALCAREOUS
109.0-115.0 ft unknown CLAY GRAY SLIGHTLY COHESIVE SILTY
115.0-119.0 ft unknown CLAY GRAY SILTY NON-CALCAREOUS
119.0-122.0 ft unknown LIGNITE
122.0-129.0 ft unknown SILTY CLAY-CLAYEY SILT VERY SOFT
129.0-135.0 ft unknown CLAY GRAY SLIGHTLY SILTY COHESIVE CALCAREOUS
135.0-136.0 ft unknown LIGNITE
136.0-150.0 ft unknown SILTY CLAY GRAY COHESIVE STICKY CALCAREOUS
150.0-155.0 ft unknown CLAY LIGHT GRAY SILTY STICKY CALCAREOUS
155.0-163.0 ft unknown CLAY GRAY VERY COHESIVE NON-CALCAREOUS
163.0-168.0 ft unknown CLAY GRAY-GREEN COHESIVE PLASTIC NON-CALCAREOUS
168.0-177.0 ft unknown CLAY GRAY COHESIVE SLIGHTLY SILTY CALCAREOUS
177.0-177.5 ft unknown LIGNITE
177.5-179.0 ft unknown CLAY GRAY
179.0-180.0 ft unknown LIGNITE
180.0-184.0 ft unknown CLAY GRAY COHESIVE NON-CALCAREOUS
184.0-193.0 ft unknown LIGNITE
193.0-205.0 ft unknown CLAY GRAY TO GRAY-BROWN LIGNITE STRINGERS NON- CALCAREOUS

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