Discussion
The belt overlying the water table in which water is drawn up from the zone of saturation and held against the force of gravity in all or some of the rock interstices is called ............... .
Answer: C
This belt is the capillary fringe.
Just above the water table, water is drawn up from the saturated zone into the small pores of the soil or rock by capillary attraction and held there against gravity. The resulting moist belt is the capillary fringe; its thickness depends on pore size, from a few centimetres in coarse sand to a metre or more in fine-grained material.
Specific retention is the volume of water a rock holds against gravity after drainage, a property rather than a zone. Static water level is the level of water in a well at rest, and the potentiometric surface is the level to which water in a confined aquifer would rise.
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