GEOLOGY

Detailed explanation-1: -The saturated zone, a zone in which all the pores and rock fractures are filled with water, underlies the unsaturated zone. The top of the saturated zone is called the water table (Diagram 1). The water table may be just below or hundreds of feet below the land surface.

Detailed explanation-2: -Underneath the water table is the saturated zone, where water fills all spaces between sediments. The saturated zone is bounded at the bottom by impenetrable rock. The shape and height of the water table is influenced by the land surface that lies above it; it curves up under hills and drops under valleys.

Detailed explanation-3: -The water table sits on top of what experts call the zone of saturation, or phreatic zone. The area above the water table is called the vadose zone.

Detailed explanation-4: -The upper surface of this water-filled area, or “zone of saturation", is called the water table.

Detailed explanation-5: -The vadose zone is the undersaturated portion of the subsurface that lies above the groundwater table. The soil and rock in the vadose zone are not fully saturated with water; that is, the pores within them contain air as well as water.