Occurrence of Ground Water (With Diagram) | Well Irrigation
The subsurface occurrence of ground water can be divided into two zones (Fig. 4.1): (i) Vadose zone or unsaturated zone or zone of aeration, and (ii) Phreatic zone or saturated zone or zone of saturation. In the saturated zone, all pores or voids are filled with water, whereas in the unsaturated zone, pores contain gases (mainly air and water vapours) [...]