Why does river damming sometimes contribute to coastal erosion?
A)The supply of sediment to beaches is shut off.
B)The supply of water to the longshore current is reduced.
C)The channel between jetties tends to become clogged with sand.
D)The reservoirs occasionally flood through a distributary channel, eroding the beach.

Question

Quizplus · Accepted Answer

River damming can prevent sediment from reaching the coastline, leading to a reduction in the amount of sediment available to replenish beaches and prevent erosion. This can result in a shortage of sediment and a decrease in the size of beaches, contributing to coastal erosion.

Why Does River Damming Sometimes Contribute to Coastal Erosion