The Tamor River is a major river in eastern

Nepal Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is ma ...

, which begins around

Kanchenjunga Kangchenjunga, also spelled Kanchenjunga, Kanchanjanghā (), and Khangchendzonga, is the third highest mountain in the world. Its summit lies at in a section of the Himalayas, the ''Kangchenjunga Himal'', which is bounded in the west by the ...

. The Tamor and the Arun join the

Sun Koshi The Sunkoshi, also spelt Sunkosi, is a river of Nepal that is part of the Koshi or Saptkoshi River system in Nepal. Sunkoshi has two source streams, one that arises within Nepal in Choukati, and the other more significant stream that flows in f ...

at Tribenighat to form the giant Saptakoshi which flows through

Mahabharat Range The Lower Himalayan Range ( ne, पर्वत शृङ्खला parbat shrinkhalā) – also called the Middle Himalayas or Lesser Himalayas or Himachal – is a major east–west mountain range with elevations 3,700 to 4,500 m (12,000 to ...

on to the Gangetic plain

Koshi river system

The Koshi or Sapta Kosi drains eastern Nepal. It is known as Sapt Koshi because of the seven rivers which join together in east-central Nepal to form this river. The main rivers forming the Koshi system are – the

, the

Indravati River Indravati River is a tributary of the Godavari River, in central India. The Indravati River is a stream of the river Godavari. Its starting point, found to be the Ghats of Dandakaranya, range from a hilltop village Mardiguda of Thuamula R ...

, the

Bhote Koshi Bhote Koshi in Nepal and Poiqu in Tibet, both names roughly mean "Tibetan river," is the name given to the upper course (main tributary) of the Sun Kosi river. It is part of the Koshi River system in Nepal.Shrestha, A. B., Eriksson, M., Mool, ...

, the

Dudh Koshi Dudh Koshi (दुधकोशी नदी, ''Milk-Koshi River'') is a river in eastern Nepal. It is the highest river in terms of elevation. Koshi river system The Kosi River, or Sapt Koshi, drains eastern up. It is known as Sapta Koshi because ...

Arun River The River Arun () is a river in the English county of West Sussex. At long, it is the longest river entirely in Sussex and one of the longest starting in Sussex after the River Medway, River Wey and River Mole. From the series of small stream ...

, Barun River, and Tamur River. The combined river flows through the

Chatra Gorge The Chatra Gorge is a canyon cut by the Kosi River across the Mahabharat Range in Nepal. Kosi river system The Kosi, or Sapt Kosi, drains eastern Nepal. It is known as Sapt Koshi because of the seven rivers which join together in east-central Nep ...

in a southerly direction to emerge from the hills. The Sun Koshi contributes 44 per cent of the total water in the Sapta Koshi, the Arun 37 per cent and the Tamur River 19 per cent.

References

Rivers of the Province No. 1 {{Nepal-river-stub