Dozens of significant rivers rise in Asia. Here we highlight a few on the map and briefly describe some of the most significant ones, including the Ganges, Indus, Lena, Mekong, Ob, Yangtze and Yellow. Ganges The Ganges is the most sacred river to Hindus and is also a lifeline to millions of Indians who live along its course and depend on it for their daily needs. It is 1, miles 2, km in length. It is the 11th longest river in the world at 2, miles 4, km. It provides water resources south east asian river the economy of Pakistan - especially the Breadbasket of the southeast, which accounts for most of the nation's agricultural production. Mekong The Mekong is the world's 10th-longest south east asian river and the 7th-longest in Asia.