GEOLOGY

Detailed explanation-1: -This is the area where groundwater seeps up to the soil surface or into streams. Waterlogging and salinity are most likely to occur in these areas.

Detailed explanation-2: -Springs are formed where the water table naturally meets the land surface, causing groundwater to flow from the surface and eventually into a stream, river, or lake.

Detailed explanation-3: -Groundwater is found in two zones. The unsaturated zone, immediately below the land surface, contains water and air in the open spaces, or pores. The saturated zone, a zone in which all the pores and rock fractures are filled with water, underlies the unsaturated zone.

Detailed explanation-4: -The vadose water is further subdivided into three zones, i.e., soil water zone, intermediate zone and capillary zone.