Question

What are dams? How are dams responsible for the availability of water for the entire year for a particular region?

Answer 1

Dams are massive artificial walls built across rivers to regulate and retain water. Water is collected behind the walls in a reservoir. Dams include gates which can be opened or closed to channelize the water to the downstream regions. During dry seasons, when the river turns dry, these dams let out the collected water and regulate the water flow in the rivers and make water available evenly throughout the year.