Lena River Delta

The Lena in Siberia is the 10th longest river in the world and has the seventh largest watershed. Rising at the height of 1640 m at its source in the Baikal Mountains south of the Central Siberian Plateau, 7 km 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 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 10,800 km² in area, and traversed by seven principal branches, the most important being Bykov, farthest east.

At the mouth of the Lena River is a delta that is about 400 km (250 miles) wide. The delta is frozen tundra for about 7 months of the year, but in May transforms the region into a lush wetland for the next few months. Part of the area is protected as part of the Lena Delta Wildlife Reserve. (Wikipedia)


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