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How does the Pelly River affect the volume of the Yukon River?
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Yukon River
Five Finger Rapid on the upper Yukon River in Yukon.
At the village of Selkirk, the Pelly River joins the Yukon River, significantly increasing its volume. This occurs because the Pelly River drains approximately 19,700 square miles (51,000 square km) of the western slopes of the Mackenzie Mountains.12