The Ravi River  is a river in India and Pakistan. It is one of the five rivers which give Punjab its name. The Ravi was known as Parushni or Iravati to Indians in Vedic times and Hydraotes to the Ancient Greeks. It originates in the Himalayas in the Chamba district of Himachal Pradesh following a north-westerly course. It turns to the south-west, near Dalhousie, and then cuts a gorge in the Dhaula Dhar range entering the Punjab plain near Madhopur. It then flows along the Indo-Pakistan border for some distance before entering Pakistan and joining the Chenab river. The total length of the river is about 720 km. The waters of the Ravi river are allocated to India under the Indus Waters Treaty between India and Pakistan.