Classify the Himalayas on the basis of regions from the West to East

Classify the Himalayas on the basis of regions from the West to East.
Answer:
This division of the Himalayas is demarcated by the river valleys.

Punjab Himalayas: This part of the Himalayas lies between the rivers Indus and Satluj. It is also known as Kashmir and the Himachal Himalayas.
Kumaon Himalayas: This part of the Himalayas lies between Satluj and Kali rivers.
Nepal Himalayas: This part of the Himalayas lies between Kali and Teesta rivers.