Question

Why are the rivers of north India perennial and those of south India are seasonal?

Answer 1

Hint: To answer this question, you must know about the sources of rivers. The most important perennial river of north India, the Ganga originates from the Himalayas while the seasonal rivers of the southern region of the country originate from the peninsular plateau and central highland.

Complete answer: A river or a stream that has a constant or consistent flow throughout the year is known as a perennial stream or perennial river. Perennial rivers continually deliver groundwater during the conditions of extreme drought.
The river flows only in the season of rain and it remains dry in other seasons is known as a seasonal river. During droughts, these rivers are the most affected.
The rivers that originate from the northern region of the country are perennial. These rivers are fed by glaciers through the melting of snow and perennial rivers also receive heavy rainfall during the rainy season. The perfect example of a perennial river is the Ganga river. Jhelum, Chenab, Beas, Ravi, and Sutlej are other examples of perennial rivers.
While the rivers in the south are seasonal as the rivers of this region do not originate from the glaciers. During the monsoon or rainy season, the flow increases extensively, and in other seasons the flow pattern witnesses instabilities. Therefore, it is evident that the flow of South Indian rivers is controlled by the rainfall. The major seasonal rivers of our country are the Godavari, Krishna, Tapi, Narmada, Brahmaputra, Mahanadi, etc.

Note: While talking about the nature of both the rivers, the course of the flow of the perennial river is long. The river flows through rugged mountains. While the course of the seasonal river is small. It flows through we'll adjusted valleys.