GEOLOGY

Detailed explanation-1: -A well is human-made hole that is dug or drilled deep enough to intersect the water table. Wells are usually used as a source for groundwater.

Detailed explanation-2: -Borehole: the hole drilled to construct a well. Most boreholes for domestic wells in Montana are only slightly larger than the well casing. Casing: Steel or plastic pipe placed in the borehole to keep it from collapsing.

Detailed explanation-3: -An aquifer is a body of porous rock or sediment saturated with groundwater. Groundwater enters an aquifer as precipitation seeps through the soil. It can move through the aquifer and resurface through springs and wells.

Detailed explanation-4: -The saturated area beneath the water table is called an aquifer, and aquifers are huge storehouses of water. In our sand hole example, you have essentially dug a “well” that exposes the water table, with an aquifer beneath it.

Detailed explanation-5: -Water gets into the ground mostly through snowmelt and rain seeping into the soil, broken rocks underneath the ground and through overland flow in channels, such as creeks, streams, rivers and ponds. The water infiltrating the underground moves gradually, driven by gravity, into the saturated zone of the subsurface.