Describe the divisions of the Himalayas that have been demarcated by the river valleys.
The divisions of the Himalayas that have been demarcated by the river valleys are:
The part of the Himalayas lying between the rivers Indus and Satluj is known as Punjab Himalayas.
The part of the Himalayas lying between the rivers Kali and Teesta is known as Nepal Himalayas.
The part of the Himalayas lying between the rivers Teesta and Dihang is known as Assam Himalayas.
The part of the Himalayas lying between the rivers Satluj and Kali is known as Kumaon Himalayas.