Drainage

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The term drainage describes the river system of an area. The area drained by a single river system is called a drainage basin.

Drainage patterns:

1. Dendritic drainage
2. Trellis drainage
3. Rectangular drainage
4. Radial drainage

The drainage systems of India are mainly controlled by the broad relief features of the subcontinent.

Accordingly, the Indian rivers are divided into two major groups:

1. The Himalayan rivers
2. The Peninsular rivers