Question

Write one advantage and one disadvantage of construction of dams.

Answer 1

Dams:

1. Dams are huge barriers built across rivers and streams to store and utilize the flow of water for various human needs.
2. Large dams ensure adequate water storage, particularly during lean seasons and they also make available water supply to arid and semi-arid areas where rainfall is scanty.
3. Canal systems leading from these dams can transfer large amounts of water to great distances and bring greenery to considerable areas.

Advantages of construction of dams:

1. Water is transferred for agricultural activities to distant areas from dams through a canal system.

Disadvantages of construction of dams:

1. Dams contribute enormously to deforestation and the loss of biological diversity. They can also result in potentially huge accidents during disasters like earthquakes.