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