is a river
in western-central Poland
, a tributary of the Odra
river. With a length of approximately 808 kilometers it is the country's third longest river. Warta has a basin area of 54,529. It is connected to the Vistula
by the river Notec
and the Bydgoszcz Canal. One of its major tributaries is Liswarta, named after the village, Lisów.