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NIOS Class 10 Social Studies Chapter 9 Physiography of India Part 3

Drainage Systems in India

  • It refers to the system of flow of surface water mainly through rivers.
  • It affected by a number of factors like a slope of the land, geological structure, amount and velocity of the water.
  • The helps in excess water removal from a particular area, transportation of sediments from one place to other, providing a natural source for irrigation and maintaining the water table.

The Himalayan Drainage System

  • The Indus River System consist of Jhelum, Ravi, Beas and Satluj
  • The Ganga Rivers System consist Yamuna, Ramganga, Ghaghara, Gomti, Gandak and Kosi etc.
  • The Brahmaputra River System consist Dibang, Lohit, Tista and Meghna.
  • Most of them are perennial. They receive water from the snowy glacier.

The Peninsular Drainage

  • Mahanadi, Godavari, Krishna and Kaveri are the major peninsular rivers in India.
  • They are good for hydropower projects because they form rapids & waterfalls.
  • Most of the rivers flow eastwards and enters into Bay of Bengal except Narmada and Tapi rivers which flow westwards of the Western Ghats.
Illustration: The Peninsular Drainage