Oder

For the smaller river in Lower Saxony, Germany, see Oder (Harz).

Oder (Odra)
River
Oder between Kienitz and Zollbrücke, Germany
Countries	Czech Republic, Poland, Germany
Source
- location	Oderské vrchy, Silesia, Czech Republic
Mouth	Szczecin Lagoon
- location	Baltic Sea, Poland
- coordinates	53°40′19″N 14°31′25″E
Length	854 km (531 mi)
Basin	118,861 km2 (45,892 sq mi)
Discharge	mouth
- average	574 m3/s (20,271 cu ft/s)

The Oder (German: Oder [ˈoːdɐ]; Czech/Polish: Odra) is a river in Central Europe. It rises in the Czech Republic and flows through western Poland, later forming 187 kilometres (116 mi) of the border between Poland and Germany, part of the Oder-Neisse line. The river ultimately flows into the Szczecin Lagoon north of Szczecin and then into three branches (the Dziwna, Świna and Peene) that empty into the Gulf of Pomerania of the Baltic Sea.

Names

The Oder is known by several names in different languages, but the modern ones are very similar: (English and German: Oder; Czech, Polish, and Lower Sorbian: Odra, Upper Sorbian: Wódra; Kashubian: Òdra (pronounced [ˈwɛdra]); Medieval Latin: Od(d)era); Renaissance Latin: Viadrus (invented in 1534). Claudius Ptolemaios gives for the localization of modern Oder a river Συήβος (Suebos, Latin: Suevus, from the name for the tribe of the Suebi), which resembles the modern name Świna for the main connection from the Oder Lagoon to the Baltic Sea. A mouth named Οὐιαδούα (or Οὐιλδούα, graphical similarity of Α and Λ), therefore Latin Viadua or Vildua, is localized by him at one third of the distance between Suebos and Vistula, maybe it is modern Wieprz. In Old Church Slavonic language, the name of the river is Vjodr.

Geography

The Oder is 854 km long: 112 in the Czech Republic, 742 in Poland (including 187 on the border between Germany and Poland) and is the second longest river in Poland (after the Vistula). It drains a basin of 118,861 km², 106,056 of which are in Poland (89%), 7,217 in the Czech Republic (6%), and 5,587 in Germany (5%). Channels connect it to the Havel, Spree, Vistula system and Kłodnica. It flows through Silesian, Opole, Lower Silesian, Lubusz, and West Pomeranian voivodeships of Poland and the states of Brandenburg and Mecklenburg-Vorpommern in Germany.

Oder River. View from Ziegenwerder Island in Frankfurt (Oder), Germany to Słubice, Poland.

Estuary of the Lusatian Neisse into the Oder.

Oder in Szczecin, Wały Chrobrego.

Łarpia, a left distributary of Oder in winter, The Old Town of Police, Poland.

The main branch empties into the Szczecin Lagoon near Police. The Szczecin Lagoon is bordered on the north by the islands of Usedom (west) and Wolin (east). Between these two islands, there is only a narrow channel (Świna) going to the Bay of Pomerania, which forms a part of the Baltic Sea.

The largest city on the Oder River is Wrocław, in Lower Silesia.

Navigation

The Oder is navigable over a large part of its total length, as far upstream as to the town of Koźle, where the river connects to the Gliwicki Canal. The upstream part of the river is canalized and permits larger barges (up to CEMT Class IV) to navigate between the industrial sites around the Wrocław area.

Further downstream the river is free flowing, passing the towns of Eisenhüttenstadt (where the Oder–Spree Canal connects the river to the Spree in Berlin) and Frankfurt upon Oder. Downstream of Frankfurt the Warta River forms a navigable connection with Poznań and Bydgoszcz for smaller vessels. At Hohensaaten the Havel-Oder-Wasserstrasse connects with the Berlin waterways again.

Near its mouth the Oder reaches the city of Szczecin, a major maritime port. The river finally reaches the Baltic Sea through the Szczecin Lagoon and the river mouth at Świnoujście. (Source: NoorderSoft Waterways Database)

History

The river in Germania Magna was known to the Romans as the Viadrus or Viadua in Classical Latin, as it was a branch of the Amber Road from the Baltic Sea to the Roman Empire (see via). In German language it was and is called the Oder, written in older records as Odera or Oddera in Medieval Latin documents. It was mentioned in the Dagome iudex, which described territory of the Duchy of Poland under Mieszko I of Poland ca. 990, as a part of duchies western frontier.

Before Slavs settled along its banks, Oder was an important trade route and towns in Germania were documented along with many tribes living between the rivers Albis (Elbe), Oder and Vistula. Centuries later, after Germanic tribes were long gone, the Bavarian Geographer (ca. 845) specifies the following Westslavic peoples: Sleenzane, Dadosesani, Opoloni, Lupiglaa, and Gоlеnsizi in Silesia and Wolinians and Pyrzycans in Western Pomerania. A document of the Bishopric of Prague (1086) mentions Zlasane, Trebovyane, Poborane, and Dedositze in Silesia. In the 13th century, the first dams were built to protect agricultural lands.

The Finow Canal, built for the first time in 1605, connects Oder and Havel. After completion of the more straight Oder Havel Canal in 1914, its economic relevance decreased.

The earliest important undertaking with a view of improving the waterway was due to the initiative of Frederick the Great, who recommended the diversion of the river into a new and straight channel in the swampy tract of land known as Oderbruch near Küstrin. The work was carried out in the years 1746-1753, a large tract of marshland being brought under cultivation, a considerable detour cut off and the main stream successfully confined to a canal.

In the late 19th century three additional alterations were made to the waterway.

• The canalization of the main stream at Breslau, and from the confluence of the Glatzer Neisse to the mouth of the Klodnitz Canal, a distance of over 50 miles (80 km). These engineering works were completed in 1896.
• During 1887-1891 the Oder–Spree Canal was made to connect the two rivers named.
• The deepening and regulation of the mouth and lower course of the stream.

By the Treaty of Versailles the navigation on the Oder became subject to International Commission of the Oder. Following the articles 363 and 364 of the Treaty Czechoslovakia was entitled to lease in Stettin (now Szczecin) its own section in the harbour, then called Tschechoslowakische Zone im Hafen Stettin. The contract of lease between Czechoslovakia and Germany, and supervised by the United Kingdom, was signed on February 16, 1929 and would end in 2028, however, after 1945 Czechoslovakia did not regain this legal position, de facto abolished in 1938/1939.

At the 1943 Tehran Conference the allies determined the new Eastern border of Germany to run along the Oder but after World War II, the Oder and the Lusatian Neisse formed the Oder-Neisse line, which was designated by the victorious allies at the Potsdam Conference as the new border between Poland and Germany. The German populations east of these two rivers were evacuated by the nazis or fled before the approaching Red Army. The remaining part was transferred west after the war in accordance with the Potsdam Agreement. East Germany confirmed the border with Poland in 1950, then West Germany, after a period of refusal, finally accepted the border in 1970. In 1990 newly reunified Germany and the Republic of Poland signed a treaty recognizing it as their border.

Cities

Oder in Police

Main section:

Ostrava - Bohumín - Racibórz - Kędzierzyn-Koźle - Krapkowice - Opole - Brzeg - Oława - Jelcz-Laskowice - Wrocław - Brzeg Dolny - Ścinawa - Szlichtyngowa - Głogów - Bytom Odrzański - Nowa Sól - Krosno Odrzańskie - Eisenhüttenstadt - Frankfurt (Oder) - Słubice - Kostrzyn - Cedynia - Schwedt - Vierraden - Gartz - Gryfino - Szczecin - Police

Dziwna branch (between Wolin Island and mainland Poland):

Wolin - Kamień Pomorski - Dziwnów

Świna branch (between Wolin and the Usedom islands):

Świnoujście

Szczecin Lagoon:

Nowe Warpno - Ueckermünde

Peene branch (between Usedom Island and the German mainland):

Usedom - Lassan - Wolgast

Eastern tributaries

Ostravice - Olza - Ruda - Bierawka - Kłodnica - Czarnka - Mała Panew - Stobrawa - Widawa - Jezierzyca - Barycz - Krzycki Rów - Obrzyca - Jabłonna - Pliszka - Ołobok - Gryzynka - Warta with the Noteć - Myśla - Kurzyca - Stubia - Rurzyca - Tywa - Płonia - Ina - Gowienica

Western tributaries

Opava - Psina (Cyna) - Cisek - Olszówka - Stradunia - Osobłoga - Prószkowski Potok - Nysa Kłodzka - Oława - Ślęza - Bystrzyca - Średzka Woda - Cicha Woda - Kaczawa - Ślepca - Zimnica - Dębniak - Biała Woda - Czarna Struga - Śląska Ochla - Zimny Potok - Bóbr - Olcha - Racza - Lusatian Neisse - Finow - Gunica

See also

• List of rivers of Germany
• List of rivers of Poland
• Lower Odra Valley National Park
• Maritsa river, which marks the modern land border between Greece and Turkey
• Oder-Neisse line

External links

• multi-lingual information site on the Oder river
• Odra River electronic shipping guide
• Bibliography on Water Resources and International Law Peace Palace Library

 This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.