title: Tromyogan
text: # Tromyogan
  
  The Tromyogan (Russian: Тромъёган) is a river in Khanty-Mansi Autonomous Okrug, Russia, a tributary of the Ob. It is 581 kilometres (361 mi) long, and has a drainage basin of 55,600 square kilometres (21,500 sq mi).
  
  ## Course
  
  The Tromyogan is a right tributary of the Ob river. It has its sources in the Siberian Uvaly. The river flows to the north of the Vatinsky Yogan basin.
  
  ### Tributaries
  
  The main tributary of the Tromyogan is the 544 km (338 mi) long Agan on the right.
  
  