Explanation:

As is well known, the Tibetan plateau happens to be the largest water tank in the world. All the 10 major river systems of Asia including the Indus, Sutlej, Brahmaputra, Irrawady, Salween and Mekong originate in the Tibetan plateau. Of the world‘s 6.92 billion people, for nearly 2 billion (29 per cent) living in South Asia from Afghanistan to the Ganga-Meghna-Brahmaputra basin and in Southeast Asia the rivers flowing from Tibet constitute the lifeline.

Some of these Chinese activities might affect Nepal as well. Some of Nepal‘s major rivers originate in Tibet before finally merging into the Ganga in India. Of them, the most important is Karnali (507 km), Nepal‘s longest river. Tibet is also the origin of some parts of Kali Gandaki River, Budhi Gandaki River and the larger part of Trishuli River, which are the major tributaries of the Gandaki River system in Nepal. Similarly, the major tributaries of the Koshi river such as the Sun Koshi/Bhote Koshi, the Tama Koshi and Arun originate in Tibet. 4 Nepal would be affected seriously if dams and diversion projects are built in upper riparian Tibet on\ such rivers as the Karnali in the west, Gandaki in the central and Kosi in the eastern part of the country