The Czarna Hańcza, Chornaya Hancha () is the largest river of the Suwałki Region of north-eastern Poland and the Sapockin region of north-western Belarus. It is known for having large postglacial boulders. Originating near Lake Hańcza (the deepest lake in Poland with a maximum depth of 108.5 m) and flowing through lake Hańcza and Wigry Lake (the location of Wigry National Park), the Czarna Hańcza is a tributary of the river Neman beyond the borders of Belarus and Lithuania.Jerzy Nalepa, Jaćwięgowie. Nazwa i lokalizacja, Wydawnictwo Naukowe PWN, Warszawa 1964, s.7. It flows through the city of Suwałki.
See also Augustów Canal Biała Hańcza
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