plain is made up of gravels and unassorted sediments deposited by the Himalayan rivers. The porosity of this plain is so high that most of the small streams flow over this region disappear. Its width varies from to km. It is wider in the western plains (Jammu Division) than in the east (Assam).
This plain is not suitable for cultivation, only big trees with large roots thrive in this region. b) The Tarai Tract It is a zone of excessive dampness, thick forests and rich wild life. This tract lies to the south of Bhabar plains. The width of this belt is - km.
The Tarai is wider in the eastern parts of the Great Plains, especially in the Brahmaputra Valley due to heavy rainfall. In many states, the Tarai forests have been cleared for cultivation. c) The Bhangar Plains The Bhangar plains represent the upland alluvial tracts of the Great Plains of India, formed by the older alluviums. The Bhangar land lies above the flood limits of the rivers.
This India – Location, Relief and Drainage ) Punjab - Haryana Plains: It lies to the north- east of the Great Indian Desert. This plain is found over an area of about . lakh sq.km. The Punjab - Haryana plains are formed by the deposition of the rivers Sutlej, Beas and Ravi.
This plain acts as water - divide (doab). The two major watershed it divides are Yamuna – Sutlej and Ganga – Yamuna. ) Ganga Plains: It extends from the Yamuna River in the west to Bangladesh in the east. The total area covered by this plain is about .
sq.km. River Ganga and its tributaries such as Ghaghra, Gandak, Kosi, Yamuna, Chambal, Betwa etc. constitute this plain by their sediments and make a great plain in India. It is the largest plain of India.
The general slope of the entire plain (upper, middle and lower Ganga plains) is towards east and south-east. ) Brahmaputra Plains: It is located mainly in the state of Assam. It