Soan River (; ), also Sawan, or Sohan, is a river in Punjab, Pakistan. It originates from the Murree Hills and joins the Indus River near Makhad. Oldest evidence of human activity in Pakistan has been found in the Soan River valley. The human activity in the Soon Valley area is believed to have originated during the Stone Age.]]
The Soan river is more than long. The Islamabad Expressway crosses this stream near Sihala at the Kak Pul bridge. The Ling Stream joins the Soan river just before the Kak Pul. Two other streams, the Korang River and the Lai stream, join the Soan just before and after the Soan Bridge, respectively. After following a path along a big curve, the stream reaches the proposed Kalabagh Dam site close to Pir Piai where it falls into the Indus River.
The marine life of the river is currently endangered due to the discharge of chemicals of the Sihala Industrial State and effluent water of Rawalpindi city into it.
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