<P> The ultimate source of the Indus is in Tibet ; the river begins at the confluence of the Sengge Zangbo and Gar Tsangpo rivers that drain the Nganglong Kangri and Gangdise Shan ( Gang Rinpoche , Mt . Kailas ) mountain ranges . The Indus then flows northwest through Ladakh and Baltistan into Gilgit , just south of the Karakoram range . The Shyok , Shigar and Gilgit rivers carry glacial waters into the main river . It gradually bends to the south , coming out of the hills between Peshawar and Rawalpindi . The Indus passes gigantic gorges 4,500 -- 5,200 metres ( 15,000 -- 17,000 feet ) deep near the Nanga Parbat massif . It flows swiftly across Hazara and is dammed at the Tarbela Reservoir . The Kabul River joins it near Attock . The remainder of its route to the sea is in the plains of the Punjab and Sindh , where the flow of the river becomes slow and highly braided . It is joined by the Panjnad at Mithankot . Beyond this confluence , the river , at one time , was named the Satnad River ( sat = `` seven '' , nadī = `` river '' ) , as the river now carried the waters of the Kabul River , the Indus River and the five Punjab rivers . Passing by Jamshoro , it ends in a large delta to the east of Thatta . </P>
where do the river indus have their origin
at the confluence of the Sengge Zangbo and Gar Tsangpo rivers that drain the Nganglong Kangri and Gangdise Shan ( Gang Rinpoche , Mt . Kailas ) mountain ranges