River in Asia, rising in Tibet and flowing 3,180 km/1,975 mi to the Arabian Sea. In 1960 the use of its waters, including those of its five tributaries, was divided between India (rivers Ravi, Beas, Sutlej) and Pakistan (rivers Indus, Jhelum, Chenab). In the 3rd and 2nd millennia BC Indus Valley civilization flourished at centres such as Harappa and Mojenjo Daro.