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Lena River


Biggest River on Earth ::--|| 1.Nile River|| 2.Amazon River|| 3.Yangtze River|| 4.Missisipi River|| 5.Yenisei River|| 6.Yellow River|| 7.Ob River|| 8.Parana River|| 9.Congo River|| 10.Amur River|| 11.Lena River|| 12.Mekong River|| 13.Mackenzie River|| 14.Niger River|| 15.Murray/Darling River|| 16.Tocantins River|| 17.Volga River|| 18.Purus River|| 19.Madeira River|| 20.Sao Francisco River||List of River's.||


lena river
Lena watershed
Country
Russia
Tributaries
- left
Kirenga, Vilyuy
- right
Vitim, Olyokma, Aldan
Source
- location
Baikal Mountains, Irkutsk Oblast,Russia
- elevation
1,640 m (5,381 ft)
Mouth
Lena Delta
- location
Arctic Ocean, Laptev Sea
Length
4,472 km (2,779 mi)
Basin
2,500,000 km2 (965,255 sq mi)
Discharge
for Laptev Sea
- average
16,871 m3/s (595,794 cu ft/s)
- max
241,000 m3/s (8,510,835 cu ft/s)
- min
366 m3/s (12,925 cu ft/s)

The Lena is the easternmost of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Ob River and the Yenisei River). It is the 11th longest river in the world and has the 9th largest watershed. It is the greatest Russian river with its watershed entirely within national ranges.



The Lena is the 11th-longest river in the world, flowing 2,734 miles across the Far East regions of Russia, forming near Lake Baykal and flowing northeast to the Arctic Ocean. It empties in a 250-mile-wide delta at the Laptev Sea.

The river is home to many kinds of animal and plant life but only for a few months out of the year; the rest of the time, the river is frozen solid. Among the animals that call this wetland home during the warmer months are ducks, geese, sandpipers, terns, and gulls. A fish called the cisco is thought to come only from this wetland. Marine mammals live there as well.

The river flooded its banks in a big way in 2001, causing some of the worst flooding ever seen in Siberia. Hundreds of thousands of people were affected. Scientists had to blow up iceblocks that were blocking the river's flow in some place.

The Laptev Sea, into which the Lena River empties, helps keep the temperature of the world's northernmost regions regulated, through large blocks of ice that from from the Lena's outflow and then break off when the temperature rises at the river's mouth, drifting off to cool.



Course

Rising at the height of 1,640 metres (5,381 ft) at its source 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, Vitim River and Olyokma River. From Yakutsk it enters the lowlands 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 the Lena Delta - 30,000 square kilometres (11,583 sq mi) in area, and traversed by seven principal branches, the most important being Bykov, farthest east.

Length

2,734 miles

Source(s)

Baikal Mountains, Russia

Mouth

Laptev Sea (Arctic Ocean)

Countries Flows Through

Russia

Major Cities Flows By/Through

None

The total length of the river is estimated at 4,400 km (2,700 mi). The area of the Lena river basin is calculated at 2,490,000 square kilometres (961,394 sq mi). Gold is washed out of the sands of the Vitim and the Olyokma, and mammoth tusks have been dug out of the delta.

 

The Lena has the unusual distinction of appearing to be the longest river in the world (if the longer Yenisey is not counted) when viewed on a map using a Mercator projection.

Tributaries

The Kirenga River flows north between the upper Lena and Lake Baikal. The Vitim River drains the area northeast of Lake Baikal. The Olyokma River flows north. The Amga River makes a long curve southeast and parallel to the Lena and flows into the Aldan. The Aldan River makes similar curve southeast of the Aldan and flows into the Lena north of Yakutsk. The Maya River, a tributary of the Aldan, drains an area almost to the Sea of Okhotsk. The T-shaped Chona-Vilyuy River system drains most of the area to the west.

Lena Delta

At the end of the Lena River there is a large delta that extends 100 km into the Laptev Sea and is about 400 km (250 mi) 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 the Lena Delta Wildlife Reserve.
The Lena delta divides into a multitude of flat islands. The most important are (from West to East): Chychas Aryta, Petrushka, Sagastyr, Samakh Ary Diyete, Turkan Bel'keydere, Sasyllakh Ary, Kolkhoztakh Bel'keydere, Grigoriy Diyelyakh Bel'kee (Grigoriy Islands), Nerpa Uolun Aryta, Misha Bel'keydere, Atakhtay Bel'kedere, Arangastakh, Urdiuk Pastakh Bel'key, Agys Past' Aryta, Dallalakh Island, Otto Ary, Ullakhan Ary and Orto Ues Aryta.Turukannakh-Kumaga is a long and narrow island off the Lena Delta's western shore.One of the Lena delta islands, "Ostrov Amerika-Kuba-Aryta" or "Ostrov Kuba-Aryta" was named after the island of Cuba during Soviet times. It is located at the edge of its northern shoreline.

 

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