Koshi River
Overview
Trans-boundary river
A trans-boundary river is a river that crosses at least one political border, either a border within a nation or an international boundary. The country of Bangladesh has the greatest number of these rivers, almost all of which cross national boundaries....
flowing through Nepal
Nepal
Nepal , officially the Federal Democratic Republic of Nepal, is a landlocked sovereign state located in South Asia. It is located in the Himalayas and bordered to the north by the People's Republic of China, and to the south, east, and west by the Republic of India...
and India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...
. Some of the rivers of the Koshi system, such as the Arun, the Sun Kosi
Sun Kosi
The Sun Kosi or Matsang Tsangpo is a trans-boundary river and is part of the Kosi or Sapta Kosi river system in Nepal. It originates in Tibet Autonomous Region of China.-Etymology:...
and the Bhote Koshi
Bhote Koshi
The Bhote Kosi or Rongshar Tsangpo is a trans-boundary river and is part of the Kosi or Sapta Kosi river system in Nepal. It originates in Tibet Autonomous Region of China.-Etymology:...
, originate in the Tibet Autonomous Region
Tibet Autonomous Region
The Tibet Autonomous Region , Tibet or Xizang for short, also called the Xizang Autonomous Region is a province-level autonomous region of the People's Republic of China , created in 1965....
of China. It is one of the largest tributaries of the Ganges.
Along with its tributaries, the river drains 29400 km² (11,351.4 sq mi) in China (mainly the upper Arun
Arun River (Nepal)
The Arun River is a trans-boundary river and is part of the Kosi or Sapt Koshi river system in Nepal. It originates in Tibet Autonomous Region of People's Republic of China where it is called Bum-chu.-Name:...
basin north of the Mount Everest
Mount Everest
Mount Everest is the world's highest mountain, with a peak at above sea level. It is located in the Mahalangur section of the Himalayas. The international boundary runs across the precise summit point...
region), 30700 km² (11,853.3 sq mi) in Nepal (the eastern third of the country), and 9200 km² (3,552.1 sq mi) in India.
The river basin is surrounded by ridges, which separate it from the Yarlung Zangbo River
Yarlung Zangbo River
Yarlung River is a watercourse that originates upstream from the South Tibet Valley and Yarlung Zangbo Grand Canyon, in Tibet. It then passes through the state of Arunachal Pradesh, India, where it is known as the Dihang....
in the north, the Gandaki in the west and the Mahananda
Mahananda River
The Mahananda River is a trans-boundary river that flows through the Indian states of West Bengal and Bihar, and Bangladesh. Right bank tributary Mechi forms part of Nepal's eastern boundary with West Bengal and the Kankai crosses out of Nepal.-Course:...
in the east.
Unanswered Questions
