The river Warta (/ˈvɑːrtə/VAR-tə, Polish:[ˈvarta]ⓘ; German: Warthe[ˈvaʁtə]ⓘ; Latin: Varta) rises in central Poland and meanders greatly through the Polish Plain in a north-westerly direction to flow into the Oder at Kostrzyn nad Odrą on Poland's border with Germany. About 808.2 kilometres (502.2 mi) long, it the second-longest river within the borders of Poland (after the Vistula), and the third-longest Polish river after the Oder (which also flows through the Czech Republic and Germany).[1] Its drainage basin covers 54,529 square kilometers (21,054 sq mi).[1] The Warta is navigable from Kostrzyn nad Odrą to Konin - approximately half of its length.[2]
The Warta connects to the Vistula via its own tributary, the Noteć, and the Bydgoszcz Canal (Polish: Kanał Bydgoski) near the city of Bydgoszcz.
The Greater Warta Basin defines the site of early Poland; it is said that the tribe of Western Polans (Polish: Polanie) settled the Warta Basin between the 6th and 8th century. The river is also mentioned in the second stanza of the Polish national anthem, "Poland Is Not Yet Lost".