The document discusses several major rivers within the Indus River System located in India and Pakistan. It mentions the Indus River originates in Tibet near Lake Manasarowar and flows through India's Ladakh region before entering Pakistan. It also discusses tributaries like the Shyok River and Nubra River which feed into the Indus. Other key tributaries mentioned include the Jhelum, Chenab, Ravi, Beas, and Sutlej rivers.