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How many tributaries flow into the Volga River?

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The Volga River receives water from approximately 200 tributaries, the majority of which join the river on its left bank.1

The river system as a whole is vast, comprising 151,000 rivers and permanent or intermittent streams with a total length of about 357,000 miles. Significant tributaries include the Oka, the Kama—which is the Volga's major tributary—as well as the Vetluga, Sura, and Sviyaga rivers.12