MBMG-122340

Montana Bureau of Mines and Geology

Located in Carbon County, Montana, this groundwater monitoring location is associated with a water well in the Sand and gravel aquifers (glaciated regions).

Well Construction

Depth Description
0.0-2.6 ft 4.0 in diameter pvc casing
0.0-12.6 ft 4.0 in diameter pvc/st steel casing
2.6-12.6 ft 4.0 in diameter stainless casing
12.6-22.6 ft 4.0 in diameter .02 slot st scr screen
Depth Lithology Description
0.0-1.0 ft unknown DK BR SANDY SILT LOAM - LITTLE CLAY
1.0-3.0 ft unknown LT BR CLAYEY SAND
3.0-5.0 ft unknown LIGHT BROWN CLAY
5.0-6.0 ft unknown VERY MOIST LIGHT BROWN CLAY
6.0-10.0 ft unknown LT BR SILTY CLAY @ 10' GRAVEL
10.0-12.0 ft unknown GRAVELS 1/4IN -2IN SUBROUNDED & BR CLAYEY SAND
12.0-13.0 ft unknown EASIER DLLG-SAND BUT IN & OUT OF GVLS FROM 10'-13'
13.0-14.0 ft unknown 1IN -2IN GVLS FINES ARE SAND
14.0-15.0 ft unknown LARGER ROCKS COBBLES TO 4IN VERY HARD DRILLING
15.0-16.0 ft unknown FEWER ROCKS
16.0-17.0 ft unknown HARD DRILLING NO CUTTINGS
17.0-18.0 ft unknown COBBLES COMING UP BUT NO FINES
18.0-23.0 ft unknown NO CUTTINGS -COBBLES SET SCREEN AND CASING

Operated in cooperation with: