Aquifer – Formation of underground water is mainly due to processes

Ans: Aquifer: Formation of underground water is mainly due to processes:

(i) Seeping of river and stream water

(ii) Direct seeping of rain water.

The number of inter-molecular spaces between the soil particles is quite high and water percolates down through a region called unsaturated zone.

“An aquifer can be defined as the saturated geologic layer, which is permeable enough to allow water to flow with care through it. An aquifer sits on the top of less permeable layer which greatly restricts the movement of ground water. This less permeable layer is called confining bed or aquitard or aquiclude. When ground water is sandwiched between two confining layer it is known as confined aquifers.