a city worker is trying to dig to reach the water table. she knows the unsaturated zone in the area is four…

a city worker is trying to dig to reach the water table. she knows the unsaturated zone in the area is four feet thick and the saturated zone is another five feet thick before an impermeable granite layer is reached. how deep will she have to dig to reach the water table? two feet four feet five feet nine feet

a city worker is trying to dig to reach the water table. she knows the unsaturated zone in the area is four feet thick and the saturated zone is another five feet thick before an impermeable granite layer is reached. how deep will she have to dig to reach the water table? two feet four feet five feet nine feet

Answer

Explanation:

Step1: Understand water - table concept

The water - table is the upper surface of the saturated zone.

Step2: Identify relevant thickness

The unsaturated zone is 4 feet thick. To reach the water - table, we need to dig through the unsaturated zone.

Answer:

four feet