Question

What are the benefits of a dam?

Hint:

Bhakra Nangal Dam (India) and Hoover Dam (USA) are examples of multipurpose dams.

Answer 1

Step 1: Definition of a Dam
A dam is a large barrier constructed across rivers to store water and control its flow. The stored water forms a reservoir.
Step 2: Benefits of a Dam
Irrigation: Water stored in dams is used to irrigate agricultural fields during dry seasons.
Hydroelectricity: Dams produce electricity by using stored water to rotate turbines.
Flood Control: Dams help in controlling floods by regulating water flow.
Drinking Water: Reservoirs provide water supply for domestic and industrial use.
Fishery and Tourism: Dams support fishing activities and boost tourism in nearby areas.
Step 3: Environmental Note
While dams are beneficial, they also cause ecological disturbances like displacement of people and loss of forests, hence they must be planned carefully.
Final Answer:
The main benefits of dams include irrigation, electricity generation, flood control, water supply, and support for fisheries and tourism.