Question
What are the important geomorphological features found in the river valley plains ?
Solution
The valley plains are formed by the alluvial deposits brought by the rivers.
(i)Bhabar: It is a narrow belt ranging between 8 km and 10 km parallel to Shiwalik foothills at the break up of the slope.
(ii)Tarai : South of Bhabar is the belt of Tarai with a width about 10 to 20 km where the most of rivers re-arrange without having any properly demarcated channel creating a marshy and swampy condition known as Tarai.
(iii)Bhangar : It is composed of old alluvium and forms the alluvial terraces above the level of the flood plains.
(iv)The Khadar : The flood plain which has newer alluvium is called Khadar. A newer layer is deposited by river floods every year.
(v)Delta : The mouth of mighty rivers also form the delta. Sunderban delta is an example.
