The Columbia Encyclopedia, Sixth Edition. 2001-07.
Ravi
(rä´v) (KEY) , one of the five rivers of the Punjab, 475 mi (764 km) long, rising in the Himalayas, NW India, and flowing generally W into Pakistan, past Lahore, to join the Chenab River, NE Pakistan. Its waters are used extensively for irrigation and were contested by India and Pakistan until 1960, when a treaty on the use of the Indus River waters was signed.