The Arpa (; ) is a river that flows through Armenia and Azerbaijan. Originating in Armenia's Vayots Dzor province (marz), it is a left tributary of the Aras. It is long, and has a drainage basin of .Арпа, Great Soviet Encyclopedia It originates on the slopes of the Zangezur Range and runs through many cities and towns, including Jermuk, Vayk, Yeghegnadzor, Areni, and then reaches Azerbaijan's Nakhchivan exclave, flowing through Oğlanqala, Siyaqut and Qışlaqabbas.
See also List of lakes of Armenia List of rivers of Azerbaijan Geography of Armenia Geography of Azerbaijan
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