Drainage System

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A drainage system is the systematic pattern of rivers where a main river and its tributaries flow from different directions and merge together. The water eventually empties into a water reservoir, sea…

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River Basin: The area drained by a river and its tributaries when flowing through a region. Water Divide: A mountain or upland that separates the flow of water from one drainage system to another.

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India's drainage system is divided into: (1) Himalayan Rivers - perennial rivers originating from the Himalayas (2) Peninsular Rivers - seasonal rivers originating from peninsular plateaus and Western…

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Himalayan rivers are perennial because they receive water from both monsoon rains and melting snow/glaciers throughout the year. Peninsular rivers are seasonal as they depend only on monsoon rains and…

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1. Upper Course: Mountainous region with intense erosion and fast flow 2. Middle Course: Slower flow with meanders formation 3. Lower Course: Formation of distributaries and delta near the mouth…

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Dendritic Pattern: When the arrangement of a main river and its tributaries resembles the branches of a tree. Example: River Ganga and its tributaries form a dendritic pattern.

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Trellis Pattern: When streams from mountainous regions meet each other due to slopes and form a net-like shape. Example: Many streams from the Himalayan region show this pattern.

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Main river: Sindhu (Indus). Major tributaries: Satluj, Beas, Ravi, Chenab, and Jhelum. These five rivers meet near Mithankot in Pakistan before flowing into the Arabian Sea.