Prelims ask
Russia, north, Laptev, large delta, no Baikal.
Asia
Lena
The great delta river of the Siberian three.
- Source
- Baikal Mountains, west of Lake Baikal. It does not leave the lake.
- Countries
- Russia.
- Direction
- North.
- Mouth
- Laptev Sea, Arctic Ocean.
- Length
- About 4,400 km.
- Major tributaries
- Vilyuy, Aldan, Olekma.
- Delta or estuary
- One of the largest deltas on Earth.
- Basin
- Almost entirely inside Russia. Deep permafrost. Yakutsk lies on it.
- One exam fact
- A true delta on the Laptev Sea, unlike the Ob’s gulf.
Mains use
Arctic delta in permafrost. Pair with the Mackenzie.