The Ravi is a trans-boundary river flowing through Northwestern India and eastern Pakistan. It is one of the six rivers of the Indus System in Punjab region (name of Punjab means "Five Rivers"). After the partition of India in August 1947, the waters of the Ravi River, along with five other rivers of the Indus system (Beas, Sutlej, Chenab, Jhelum and Indus), divided India and Pakistan under the Indus Water Treaty, which was facilitated by the World Bank. Subsequently, 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 Airavati) Part of the battle of the ten kings was fought on a River, which according to Yaska (Nirukta 9.26) refers to the Iravati River (Ravi River) in the Punjab.
The Ravi River, a trans-boundary 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 in to the Indian Ocean through the Indus River in Pakistan. The river rises in the Bara Bhangal, District Chamba 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.
Main Ravi River:
The main Ravi River flows through the base of Dalhousie hill, past the Chamba town. It is located at an elevation of 2,807 feet (856 m) (where a long wooden bridge existed to cross the Ravi River).It flows into the south-west, near Dalhousie, and then cuts a gorge in the Dhauladhar Range, before entering the Punjab plain near Madhopur and Pathankot. It then flows along the Indo–Pak border for 80 kilometres (50 mi) before entering Pakistan and joining the Chenab River. The total length of the river is about 725 kilometres (450 mi).
The waters of the Ravi River are allocated to India under the Indus Waters Treaty, signed by India and Pakistan. Within India, the river is under the jurisdiction of the riparian states of Punjab, Haryana, Kashmir and Rajasthan, but management is presided by the Supreme Court of India and the Ravi Beas Tribunal, set up in 1986 for the purpose.