Question

why are the Himalayan river perennial, while the peninsular river seasonal.

Answer 1

Himalayas are covered with snow which when melts produces a waterfall. This melted snow forms the perennial river whereas the peninsular rivers are seasonal because they depend on rainfall and have short courses

Answer 2

The Himalayan rivers are perennial because the Himalayan area gets the rainfall from mid of Jun to September. More over its get the huge snow cold wind. During the summer the snow melts and during the winter huge rain fall. This is the major reason that Himalayan rivers are always perennial.