Koshi River

The Basin

The Koshi River drains the northern slopes of the Himalayas in Tibet and the southern slopes in Nepal. It is one of the tributaries of the Ganga River, also known as the Ganges River, and a critical water resource for Nepal, as well as downstream communities in India. An estimated 5.2 million people depend on the Koshi River Basin, which holds cultural and spiritual significance. The basin is also one of the most biologically diverse regions on Earth, with populations of snow leopards, musk deer, wild yaks, leopard, Himalayan black bears and red pandas and nearly three-quarters of Nepal’s fish species.