What are the difference drainage patterns?

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Drainage Pattern:

i. The streams of a drainage basin from certain patterns.

ii. The patterns depend on the slope of land, underlying rock structure and the climatic conditions of the area.

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iii. Common patterns found, in India are:

  • Dendritic
  • Trellis
  • Rectangular
  • Radial and
  • Centrifugal (Inland drainage) patterns.

i. The dendritic pattern develops in the areas where the underlying rock structure exerts no control.

(а) The stream with its tributaries resembles the branches of a tree. Hence its name is dendritic.

(b) This word has been derived from the Greek word dendron which means a tree.

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ii. A river joined by its tributaries at almost right angles, develops a trellis pattern.

(a) This pattern develops in areas of strong structural central.

(b) Structural control means the area where hard and soft rocks exist parallel to each other forming a ridge and valley topography.

iii. A rectangular drainage pattern is developed on a strongly joined rocks terrain.

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iv. It tends to follow the joint patterns.

v. A radial drainage pattern develops when streams flow in different directions from a central peaks or domelike structure.

vi. The centrifugal drainage pattern is found in the areas of inland drainage usually found in arid areas. Streams flow from all sides towards a central depression. It is generally a lake.

vii. It is worthy to note that a combination of several patterns is generally found in the same drainage basin.

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