What are the main channels of the Ob River delta?

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The Ob River forms a delta as it approaches the Gulf of Ob. After the confluence of the Poluy River, the main stream branches out to form this delta, which is characterized by two principal arms:

  • Khamanelsk Ob: This arm receives the Shchuchya River from the left.
  • Nadym Ob: This is the more considerable of the two principal channels.

Prior to reaching this delta, the lower Ob also divides into two other major channels—the Great (Bolshaya) Ob and the Little (Malaya) Ob—which reunite below Shuryshkary before the river eventually branches again into the delta arms mentioned above.1