What role does the water table play in groundwater storage?

Question

It is the depth where surface water becomes groundwater.
It marks the boundary between saturated and unsaturated soil.
It shows the distance between two rivers.
It determines how fast water evaporates from lakes.

Answer 1

The correct statement regarding the role of the water table in groundwater storage is:

It marks the boundary between saturated and unsaturated soil.

The water table represents the upper surface of the zone of saturation, where all the pores in the soil and rock are filled with water. Above the water table, in the unsaturated zone, the pores contain both air and water. This boundary is crucial for understanding groundwater storage and flow.