Describe the Regional divisions of Himalayas demarcated by river valleys.
The Regional divisions of Himalayas demarcated by river valleys:
(i)The part of Himalayas lying between Indus and Satluj has been traditionally known as Punjab Himalaya but it is also known regionally as Kashmir and Himachal Himalaya from west to east respectively.
(ii)The part of the Himalayas lying between Satluj and Kali rivers is known as Kumaon Himalayas.
(iii)The Kali and Tista rivers demarcate the Nepal Himalayas and the part lying between Tista and Dihang rivers is known as Assam Himalayas.