1.

Describe different drainage paterns.

Answer»

The drainage pattern of Indian rivers can be divided into four parts:

(A) Dendritic Pattern:
When the arrangement of a river and its tributaries make a shape of the branches of a tree, it is called dendritic pattern, For example-Ganga.

(B) Trellis Pattern:

  • When streams starting from mountainous region meet one another due to the slopes they make a net-like shape. This pattern of river is called trellis pattern of river.
  • For example, many streams of Himalayan Mountains meet Himalayan rivers and form a trellis pattern.

(C) Rectangular Pattern:

  1. When the main river and its tributaries meet each other at right angles, they form a rectangular pattern.
  2. Mostly, rivers flowing through rift valleys form such river rectangular river system. For example, Narmada.

(D) Radial (Centrifugal) Pattern:

  1. In this drainage pattern, the rivers flow outwards from one central hilly region.
  2. Radial pattern is found in the river of Saurashtra.


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