CONCEPT OF WESTERN AND EASTERN HIMALAYA

differences between the Western and the Eastern Himalayas.

Western Himalayas	Eastern Himalayas
Western Himalaya is in the west of 86°E/between the rivers Indus and Kali.	Eastern Himalaya is in the east of 88°E / between the rivers Brahmaputra and Teesta.
Western Himalaya rises in a step-like manner/gradually rises from sub Himalayas to Karakoram.	Eastern Himalaya rises abruptly from the plains.
Western Himalaya is broader but lower in altitude.	Eastern Himalaya is narrower, but the highest peaks occur here.
Average rainfall is less than 100 cm in Western Himalaya.	Average rainfall in more than 200 cm in Eastern Himalaya.
Alpine vegetation/coniferous	Dense evergreen forest.
It receives less rainfall from south east monsoon rather gets precipitation from western disturbance	It receives rainfall from south east monsoon
Western Himalayas are very dry	Eastern Himalayas are wetter
Western Himalayas rise gradually in a series of ranges	Eastern Himalayas rises abruptly

WESTERN HIMALAYA

• Western Himalayas, also called Punjab Himalayas, westernmost section of the vast Himalayas mountain range.
•  It lies mainly in the disputed Kashmir region of the northern Indian subcontinent—including portions administered by India and Pakistan—and also in the northwestern part of Himachal Pradesh state, India.
•  In all, the western Himalayas extend southeast for some 350 miles (560 km) from the bend of the Indus River (northwest) to the Sutlej River (southeast). The upper Indus separates them from the Karakoram Range to the north.
• the western Himalayas are the Zaskar Range, the Pir Panjal Range, and parts of the Siwalik Range and the Great Himalayas. 
• The Jhelum River rises in the Pir Panjal Range in Jammu and Kashmir state, India, and flows northwestward through the Vale of Kashmir before entering the Pakistani-administered sector. 
• The highest point is Nanga Parbat (26,660 feet [8,126 metres]), at the northwestern end of the region. Dalhousie, in Himachal Pradesh in the foothills of the range, is a noted hill station (mountain resort).
• Western Himalaya is in the west of 86°E/between the rivers Indus and Kali.
• Western Himalaya rises in a step-like manner/gradually rises from sub Himalayas to Karakoram.
• Western Himalaya is broader but lower in altitude.
• Average rainfall is less than 100 cm in Western Himalaya.
•  Alpine vegetation/coniferous
• It receives less rainfall from south east monsoon rather gets precipitation from western disturbance
• Western Himalayas are very dry
• Western Himalayas rise gradually in a series of ranges

EASTERN HIMALAYA 

1. The Eastern Himalayas comprise the tracts of the Darjeeling Hills or North Bengal, Sikkim, Arunachal Pradesh, and eastern Bhutan. 
2. The region is drained by the Brahmaputra river and its tributaries: the Teesta drains Sikkim and the Darjeeling areas, and the Manas drains part of Bhutan and Arunachal Pradesh. The Kamang and the Subansiri are the other important rivers that drain the eastern Himalayas.
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4. The Eastern Himalayas can be divided into the following climatic regions: arctic, sub-arctic, temperate, subtropical, and warm tropical. 
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6. The forests are moist, dense, evergreen, semi-evergreen, or temperate.
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8.  Precipitation is very high and the forest region is very humid. Sal forests and evergreen trees are found extensively all along the foothills of the Eastern Himalayas. Subtropical forests cover the hills up to an elevation of about 2000 m.
9. Eastern Himalaya is in the east of 88°E / between the rivers Brahmaputra and Teesta.
10. Eastern Himalaya rises abruptly from the plains.
11. Eastern Himalaya is narrower, but the highest peaks occur here.
12. Average rainfall in more than 200 cm in Eastern Himalaya.
13. Dense evergreen forest.
14. It receives rainfall from south east monsoon
15. Eastern Himalayas are wetter
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17.  Eastern Himalayas rises abruptly