The Indus River originates in Tibet and flows through India and Pakistan. It is the longest river in Pakistan and merges into the Arabian Sea near the city of Karachi. The total length of the river is 1,976 miles.
The Indus system is fed by the snow and glaciers of the mountain ranges in Tibet, Jammu and Kashmir and Northern regions of Pakistan. The Indus river is the key water source for Pakistan, especially Punjab and Sindh, where most of the nation's crops are grown. The river supports heavy industries and is a source of drinking water. The Indus river feeds diverse ecosystems such as temperate forests, plains and arid land. The flow of the river diminishes in the winter and it gets flooded during the monsoon, which is from July to September.
The Indus River forms a natural boundary between the Indian Subcontinent and the Iranian Plateau. In conjunction with the rivers Jhelum, Beas, Chenab, Ravi, Sutlej and Sarasvati (that does not exist anymore) it forms the Sapta Sindhu or Seven Rivers Delta in the Sindh Province of Pakistan. The name Indus comes from the Latinization of the word 'Hindu' which in turn comes from the Iranian word 'Sindhu'. Sindhu in Sanskrit means river, stream or ocean.