updated on March 18th, 2019
PS :We are planning to rewrite our articles according to Amars’s Videos . That might take some time .
The drainage system refers to the system of flow of surface water mainly through rivers. An area drained by a river and its tributaries is called a drainage basin. The drainage system is related to a number of factors like
On the basis of the origin the drainage can be divided
(a) The Himalayan drainage system
(b) The Peninsular drainage system
Tributary: A stream or river that flows into a larger river. e.g.
Delta: A triangular shaped land at the mouth of a river formed from the deposition of silt, sand and small rocks that flow downstream in the river. eg. Ganga delta.
Estuary: A partially enclosed coastal body of water where the salty tidal water mixes with the fresh water of the river. eg. Narmada river makes an estuary.
HIMALAYAN RIVER SYSTEM
1. They are Perennial rivers originating from glaciers.
2. Rivers form valleys by the process of erosion.
3. The rivers are ideal for irrigation purposes as they pass through plain fertile tracts.
4. These rivers have meandering courses which shift over time.
The Himalayan Drainage System
Most of the Himalayan Rivers are perennial. This means they have water throughout the year. This is because most of these rivers originate from the glaciers and snowy peaks. They also receive water from the rainfall. The main river system in this category are:
|1. The Indus River System||Jhelum, Ravi, Beas and Satluj|
|2. The Ganga Rivers System ||Yamuna, Ramganga, Ghaghara, Gomti,|
Gandak and Kosi etc.
|3. The Brahmaputra River System||Dibang, Lohit, Tista and Meghna etc.|
THE PENINSULAR RIVER SYSTEM
You have already studied about Peninsular Plateau. Most of the Peninsular rivers flow eastwards and enters into Bay of Bengal. Only Narmada and Tapi rivers which flow westwards of the Western Ghats. They are good for generating hydropower because these rivers form rapids & water falls. The major peninsular rivers are Mahanadi, Godavari, Krishna and Kaveri.
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