Drainage System

In the NCERT Geography book Indian Physical Environment (Class 11, Chapter — “Drainage System”), you explore the river systems of India and understand how water flows across the country.

You learn about the major drainage systems of India, including the Himalayan rivers and Peninsular rivers, and their important tributaries. The chapter explains different drainage patterns such as dendritic, trellis, and radial patterns.

You also study how rivers evolve through their upper, middle, and lower courses, forming features like floodplains, deltas, and river valleys.