Some rivers have been dammed under the guise of flood control. What might be an unintended consequence of using this approach?
A) saltwater intrusion into the aquifer
B) reduced fertility of downstream land due to reduced silt deposits
C) more frequent rainfall
D) deforestation of land downstream due to reduced silt deposits
E) increased rainfall due to increased water evaporation

Question

Quizplus · Accepted Answer

Damming a river can trap silt and sediments that would naturally replenish downstream land, leading to reduced soil fertility.

Some Rivers Have Been Dammed Under the Guise of Flood