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Treene (river)

The Treene Danish: Trenen is a river, hydrologically 95 km 59 mi and nominally 734 km 456 mi long, in the north of Schleswig-Holstein, Germany It is a right-bank tributary of the River Eider It starts in northern Angeln, southeast of Flensburg, and flows mainly south-south-west before joining the Eider near Friedrichstadt

The upper course is called Bondenau Its source is situated in the ground of Mohrkirch[1][2] The name 'Treene' begins at the Tresssee lake near Großsolt in the district of Schleswig-Flensburg After about 73 km 45 mi it reaches the town of Friedrichstadt in Nordfriesland district[3] There it is released through valves into the estuary of the Eider, 25 km 16 mi above the Eider Barrage It is the most important tributary of Eider river Since the construction of Kiel Canal, it is even stronger than Eider river itself


  • 1 Details
  • 2 History
  • 3 See also
  • 4 Sources
  • 5 References


The Bondenau, as the main headstream of the Treene, rises 156 km 97 mi east of the Tressee on the peninsula of Angeln, bounded by the Flensburger Förde and the Schlei So the Treene is an unusual case of a river that rises on a peninsula in the Baltic Sea, but flows into the North Sea The length of Bondenau is 2043 km 1269 mi Half a kilometer before the Treßsee Lake Tress, it is joined by a stream named Kielstau or Kielsau, by some people considered another headstream of Treene river Between the Treßsee and Tüdal, there is a natural reserve covering an area of 20 square kilometres 77 sq mi called Obere Treenelandschaft that extends along the river Especially the lower part is a retreat area for migratory birds "stork village" Bergenhusen

The middling section between Langstedt and Treia developed to be a popular canoe district, the lower section can be used by pleasure crafts as well In Schwabstedt, there is a public swimming site in the river


From antiquity to High Middle Ages, the strip of dry land between Treene wetlands and Schlei had the function of an isthmus Here the Danevirke secured the south border of Denmark, which at that time was marked by the Eider, more than 20 km 12 mi further south And the route Eider - Treene - Rheider Au tributary of the Treene - Schlei served as a shipping route between the North Sea and Baltic Sea see also Haithabu Whether thereby boats were pulled between Selker Noor an extension of Schlei inlet and the Rheider Au 16 km 99 mi on primitive rollers over the 20 m high land ridges usual opinion, or whether the Kograben, 1 to 2 km south of and parallel to the walls of Danevirke, also served as a shipping canal, has not yet finally been clarified

See also

  • Eider-Treene Depression
  • Treene municipality
  • List of rivers of Schleswig-Holstein


  • Gerd Quedenbaum: Vorflut Der Eiderverband, ein Beitrag zur Geschichte des Deich- und Entwässerungswesens in der mittleren Eiderregion Eider-Verlag, Düsseldorf 2000
  • Gerd Quedenbaum: Sorge und Treene Eider-Verlag, Düsseldorf 1984


  1. ^ Digitaler Atlas Nord official mapserver of Schleswig-Holstein state, showing the onset of Treene river, but not the very source
  2. ^ Environment dates of Schleswig-Holstein state → Gewässernetz network of waterbodies, R=3547103 H=6063176
  3. ^ Stream gauge at Friedrichstadt

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Treene (river)

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