One of the main rivers in Russia, rising in the Sayan Mountains in the Asian Tuva region and flowing generally north through the Central Siberian Plateau into the Arctic Ocean; length 4,100 km/2,550 mi. The Yenisey has a drainage basin of 2,580,000 sq km/996,000 sq mi, and most of this area is at a height of between 487 m/1,600 ft t... Found on https://www.encyclo.co.uk/local/21221