Country Russia River mouth Angara River Source Sayan Mountains | Main source Sayan Mountains Length 630 km Mouth Angara River | |
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The Oka (Russian: Ока, Buryat: Аха) is a river in Siberia, left tributary of the Angara River. It originates in the Sayan Mountains in western Buryatia and flows through Irkutsk Oblast. It flows for 630 km (391 mi), into the Bratsk reservoir.
References
Oka River (Siberia) Wikipedia(Text) CC BY-SA