Tromyogan

The Tromyogan (Тромъёган) is a river in Khanty-Mansi Autonomous Okrug, Russia, a tributary of the Ob. It is 581 km long, and has a drainage basin of 55600 km2.

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 long Agan on the right.