River, India and Pakistan.
The westernmost of the "Five Rivers" of the Punjab region, it rises in the Himalayas in the Indian state of Jammu and Kashmir . It meanders northwest in the Pakistani-administered sector of the Kashmir region. Bending southward, it joins the Chenab River , having traveled a course of 450 mi (725 km). It is believed to be the Hydaspes mentioned by Arrian, Alexander the Great 's historian, and the Bidaspes mentioned by Ptolemy .