The Columbia Encyclopedia, Sixth Edition. 2001-07.
Warta
(vär´tä) (KEY) , river, c.475 mi (760 km) long, rising in the Jura Krakowska, S Poland, and flowing N and W past Czstochowa and Pozna to the Oder River at Kostrzyn. It is connected with the Vistula River by the Note River, its tributary, and by the Bydgoszcz Canal. The Warta is navigable for large craft to Pozna and for small craft for about half its course. The lower course of the river, formerly in Germany, became (1945) part of Poland as a result of the Potsdam Conference.