GEOLOGY

Detailed explanation-1: -Groundwater is water that exists underground in saturated zones beneath the land surface. The upper surface of the saturated zone is called the water table.

Detailed explanation-2: -Unconfined Aquifer: An aquifer which the water table is its upper boundary. Because the aquifer is not under pressure the water level in a well is the same as the water table outside the well. An unconfined aquifer is near to the earth’s surface causing it to be easily recharged as well as contaminated.

Detailed explanation-3: -Unconfined aquifers are directly connected to the surface and have water levels dependent on relatively constant recharge. Groundwater flows to the surface whenever the aquifer’s upper saturated layer, called the water table, rises to the level of the land’s surface.

Detailed explanation-4: -An aquifer where there is a lower permeability material between the aquifer and the ground surface is known as a confined aquifer, and the aquitard separating ground surface and the aquifer is known as the confining layer.