The Lena River Flowing through Siberian Lowlands, Russia
The Lena is the easternmost of the three great Siberian rivers that flow into the Arctic Ocean. It is the 10th longest river in the world and has the 9th largest watershed.
The total length of the river is estimated at 4,400 km (2,800 mi). The area of the Lena river basin is calculated at 2,490,000 square kilometres (961,394 sq mi).
Rising at the height of 1,640 metres (5,381 ft) at its source in the Baikal Mountains south of the Central Siberian Plateau, 7 kilometres (4 mi) west of Lake Baikal, the Lena flows northeast, being joined by the Kirenga River and the Vitim River.
From Yakutsk it enters the lowlands joined by the Olyokma River and flows north until joined by its right-hand affluent the Aldan River. The part of the Lena visible here is that which flows through the lowlands. Many other streams can be see as they join the main river.
The Verkhoyansk Range deflects it to the north-west; then, after receiving its most important left-hand tributary, the Vilyuy River, it makes its way nearly due north to the Laptev Sea, a division of the Arctic Ocean, emptying south-west of the New Siberian Islands by a delta 30,000 square kilometres (11,583 sq mi) in area.