Oder River

The Oder River is 840 kilometers (522 miles) long: 112 kilometers (70 miles) in the Czech Republic, 726 kilometers (451 miles) in Poland (including 187 kilometers (116 miles) on the border between Germany and Poland) and is the third-longest river in Poland (after the Vistula and Warta), but the second-longest river overall when its total length, including parts in neighboring countries, is taken into account. It drains a basin of 119,074 square kilometers (45,975 square miles), of which 106,043 km2 (40,943 sq mi) are in Poland (89 percent), 7,246 km2 (2,798 sq mi) are in the Czech Republic (6 percent), and 5,587 km2 (2,157 sq mi) are in Germany (5 percent ). Channels connect it to the Havel, Spree, Vistula, and Konica systems. It runs through the Polish voivodeships of Silesian, Opole, Lower Silesian, Lubusz, and West Pomeranian, as well as the German states of Brandenburg and Mecklenburg-Vorpommern.

The main branch empties into the Szczecin Lagoon, which is located near Police, Poland. The islands of Usedom (west) and Wolin (north) border the Szczecin Lagoon (east). There is only a narrow channel (wina) connecting these two islands to the Bay of Pomerania, which is part of the Baltic Sea.

Wrocaw, in Lower Silesia, is the Oder's largest city.

Location: Olomouc district, Czech Republic.

Length: 840 km (520 mi)