The area shown on this cross section will experience subsidence from groundwater withdrawal.Which of the following statements is likely to be true about the subsidence?
A)The amount of subsidence will be constant across the area.
B)The aquifer will regain its porosity once the water is replaced.
C)The subsidence can be reversed (undone)by pumping in saltwater.
D)None of these are correct.

Question

The area shown on this cross section will experience subsidence from groundwater withdrawal.Which of the following statements is likely to be true about the subsidence? 
A)The amount of subsidence will be constant across the area. 
B)The aquifer will regain its porosity once the water is replaced. 
C)The subsidence can be reversed (undone)by pumping in saltwater. 
D)None of these are correct.

Quizplus · Accepted Answer

None of the statements are likely to be true. Subsidence from groundwater withdrawal is a permanent and irreversible process that occurs when the water pressure in an aquifer is reduced and the soil compresses. The amount of subsidence will also vary across the area, depending on the geology and groundwater conditions. Pumping in saltwater would not reverse the subsidence and could potentially cause further damage to the aquifer and surrounding environment.

The Area Shown on This Cross Section Will Experience Subsidence