Yenisei River (Yenisey, Енисей) is considered the 7th largest river on our planet and the 2nd in Russia. The river is almost 5,500 kilometres (3,420 miles) long. Its watershed, which includes Lake Baikal, holds more water than any other river system. Yenisei's tributaries include famous Angara, Nizhnyaya Tunguska, and Tuba rivers.