Vasyugan
The Vasyugan () is a river in the southern West Siberian Plain of Russia. It is a tributary of the Ob on the left side, and its course from its source in the Vasyugan Swamp is entirely within the Kargasok district of Tomsk Oblast. Statistics. The river is long and is navigable upriver for from the mouth. The Vasyugan drains a basin of . Average annual runoff: 345 m³ / c, 10.9 km³ / year. Tributaries: Municipalities (downstream from source): Novy Vasyugan, Aypolovo, Novy Tevriz, Sredny Vasyugan, Staraya Beryozovka, Ust-Chizhapka, Naunak, Bolshaya Griva, Staroyugino, Novoyugino, Bondarka.