The Ravi (Punjabi: ਰਾਵੀ, Urdu: راوی, Hindi: रावी) is a transboundary river crossing northwestern India and eastern Pakistan. It is one of six rivers of the Indus System in Punjab region (Punjab means "Five Rivers"). The waters of Ravi are allocated to India under Indus Water Treaty.
Under the Indus Waters Treaty of 1960, the waters of the Ravi and five other rivers are divided between India and Pakistan. Subsequently, the Indus Basin Project has been developed in Pakistan and many inter-basin water transfers, irrigation, hydropower and multipurpose projects have been built in India.
According to ancient history traced to Vedas, the Ravi River was known as Iravati (also spelt Eeraveti; Sanskrit: इरावती, परुष्णि) The Ravi was known as Parushani or Iravati to Indians in Vedic times and as Hydraotes to the Ancient Greeks.
The Ravi River, a transboundary river of India and Pakistan, is an integral part of the Indus River Basin and forms the headwaters of the Indus basin. The waters of the Ravi River drain into the Arabian Sea (Indian Ocean) through the Indus River in Pakistan. The river rises in the Bara Bhangal, District Kangra in Himachal Pradesh, India. The river drains a total catchment area of 14,442 square kilometres (5,576 sq mi) in India after flowing for a length of 720 kilometres (450 mi). Flowing westward, it is hemmed by the Pir Panjal and Dhauladhar ranges, forming a triangular zone.