Which of the following is a potential drawback of using jetties to prevent beach erosion?
1. Jetties are not effective until plant life has time to grow.
2. Beach erosion may increase on the downdrift side of the jetties.
3. Jetties block boats from being able to enter harbors.
4. Building jetties is more expensive than soft beach management strategies.
1 answer
2. Beach erosion may increase on the downdrift side of the jetties is a potential drawback of using jetties to prevent beach erosion. This is because jetties may alter the way sand is transported along the beach, causing increased erosion on the downdrift side of the jetties.