Mapping: North-East India

Mapping: North-East India

Details :

Northeast India

  • Northeast India (officially North Eastern Region, NER) is the easternmost region of India representing both a geographic and political administrative division of the country.
  • It comprises eight states – Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim, and Tripura.


Hills of North-Eastern India

  • Eastern Himalayas are present in North-East India. The Brahmaputra marks the eastern border of the Himalayas.
  • Eastern Hills/ Purvanchal: Beyond the Dihang gorge, the Himalayas bend sharply towards south, forming the Eastern hills or Purvachal.
    • Although comparatively low in height (500m-3000 m), these hills are difficult to access because of rough terrain, dense forests and swift streams.
    • They are mostly composed of sandstones (i.e. Sedimentary rocks).
    • These hills are composed of the Patkai Hills, Naga Hills, Manipuri Hills and Mizo Hills.

The Barail Range seperates Naga Hills from Manipur Hills.


  • Hills of Garo, Khasi and Jaintia in Meghalaya and Mikir hills (Rengma hills) in Assam are structurally part of peninsular plateau (Shillong Plateau)and not the Himalayan ranges.
  • “Cherrapunji” and “Mawsynram” are situated to the south of the Khasi hills.

Important Rivers


  • Origin: Chemayungdung glacier in the Kailas range
  • Near Namcha Barwa, Brahmaputra takes a sudden U turn and then southwestward turn to pass through Dihang gorge.
  • Initially it is called as Siang and then Dihang.
  • Tributaries:
    • Tributaries joining from north: Dibang, Subansiri, Kameng, Belsire, Dhansiri (north), Manas, Sankosh and Tista
    • Tributaries joining from south: Lohit, Dibru, Burhi, Dihing, Dikhu, Dhansiri (South) and Kalang
  • It enters Bangladesh near Dhubri.
  • It is known as Jamuna after joining of Tista.
  • When Jamuna and Ganga joins together, it is called as Padma.
  • In South Padma is joined by Meghana (Barak river in India) and is termed as Meghana before it merges into Bay of Bengal.
  • Majuli Island: Majuli or Majoli is the largest river island in the world in the Brahmaputra River, Assam, India.
  • National Waterway 2: Brahmaputra from Dhubri to Sadiyawas declared as National Waterway no. 2 vide National Waterway

River Barak:

  • Barak river rises in Manipur Hills and flows west becoming the Surma river and then flows south as the Meghna river in Bangladesh.

Important Passes:

Important PassesState
Nathu la

Jelep la


Tunga Pass

Yonggyap Pass

Dihang Pass

Chaukan Pass

Khumjawng Pass


Bomdi la

Arunachal Pradesh

Note: Please locate all the locations from Atlas while doing this exercise

Section : Miscellaneous