The Dziwna ( German : Dievenow ) is a channel of the Oder River in northwestern Poland , one of three straits connecting the Szczecin Lagoon with the Bay of Pomerania of the Baltic Sea . It separates the island of Wolin from the Polish mainland. The other two channels are the Świna and the Peene .
13-510: About 32 km (20 mi) in length, the Dziwna forms on the eastern end of the Szczecin Lagoon , near the town of Zagórze, Kamień County . Flowing north, it passes the town of Wolin and then widens and forms a number of connected features. Towards the west the main channel of the Dziwna forms the large Kamieński Lagoon ( Polish: Zalew Kamieński ). To the east a side channel develops into
26-582: A combined annual 1 km . Since no reliable data for an inflow from the Baltic Sea exist, the combined inflow is an estimated 18 km from a catchment area of 129,000 km , residing in the lagoon for an average 55 days before being discharged into the Pomeranian Bay . The nutrients thereby transported into the lagoon have made it hyper(eu)trophic to eutrophic . The straits Peenestrom , Świna and Dziwna are responsible for 17%, 69%, and 14% of
39-558: A water route with a depth of 10 metres connecting the lagoon with the Baltic Sea by bypassing the eastern part of the Swine, allowing large ships to enter the lagoon and the seaport of Stettin quicker and safer. The canal, approximately 12 km long and 10 metres deep, was dug by the German Empire between 1874 and 1880, during the reign of the first Kaiser Wilhelm (1797–1888) after whom it
52-697: Is a lagoon in the Oder estuary, shared by Germany and Poland . It is separated from the Pomeranian Bay of the Baltic Sea by the islands of Usedom and Wolin . The lagoon is subdivided into the Kleines Haff ( Polish : Mały Zalew , "small lagoon") in the West and the Wielki Zalew ( German : Großes Haff , "great lagoon") in the East. An ambiguous historical German name was Frisches Haff , which later exclusively referred to
65-422: Is an average 3.8 metres, and 8.5 metres at maximum. The depth of shipping channels however can exceed 10.5 metres. Thus, the lagoon holds about 2.58 km of water. The annual average water temperature is 11 °C. 94% of the water loads discharged into the lagoon are from the Oder river and its confluences, amounting to an average annual 17 km or 540 m per second. All other confluences contribute
78-587: The Vistula Lagoon . From the South, the lagoon is fed by several arms of the Oder river and smaller rivers like Ziese , Peene , Zarow , Uecker , and Ina . In the North, the lagoon is connected to the Baltic Sea 's Bay of Pomerania with the three straits Peenestrom , Świna and Dziwna , which divide the mainland and the islands of Usedom and Wolin . The lagoon covers an area of 687 km , its natural depth
91-426: The 10th century. The German-Polish border also divides the bight called Neuwarper See near Rieth [ de ] , Luckow . The lagoon has served as an important fishing grounds for centuries, as a major transportation pathway since the 18th century, and as a tourist destination since the 20th century. Heringsdorf Airport on Usedom island is located on the shores of the lagoon. The southern shore of
104-559: The Zatoka Cicha ( Quiet Bay , known as Die Maad before 1949), flows north through the strait of Promna as it approaches the city of Kamień Pomorski , then rejoins the Kamieński Lagoon. Between these two channels stands the small, largely agricultural island of Chrząszczewo connected to Kamień Pomorski by a single bridge. The Kamieński Lagoon reforms into the well-defined Zatoka Wrzosowska ( Wrzosowska Bay ), narrows, then flows past
117-548: The area, but likely did not succeed with establishing control. Following Poland's fragmentation, it formed part of the Duchy of Pomerania . In the 17th century, it passed to Sweden . Later on, it gradually passed to the Kingdom of Prussia in the 18th and 19th century, and from 1871 was part of unified Germany . In 1880, the Kaiserfahrt ("Emperor's passage") channel on Usedom was opened,
130-679: The coastal city of Dziwnów for just a few kilometers as the Dziwna again before finally reaching the Bay of Pomerania . 53°55′29″N 14°41′13″E / 53.92472°N 14.68694°E / 53.92472; 14.68694 This West Pomeranian Voivodeship location article is a stub . You can help Misplaced Pages by expanding it . Szczecin Lagoon Szczecin Lagoon ( Polish : Zalew Szczeciński , German : Stettiner Haff ), also known as Oder Lagoon ( German : Oderhaff ), and Pomeranian Lagoon ( German : Pommersches Haff ),
143-399: The discharge, respectively. The average salinity is between 0.5 and 2 grams of salt per kilogram of water (approximately equivalent to 0.5 and 2 parts per thousand [ppt]). Occasionally northerly winds reverse the direction of the Świna, admitting sea water from the Baltic Sea into the lagoon, raising the local salinity to 6 ppt. In the 10th century, the emerging Polish state strove for
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#1732884400115156-743: The lagoon belongs to the Am Stettiner Haff Nature Park , its northern shore and the island of Usedom to the Usedom Island Nature Park . To the west is the Anklamer Stadtbruch Nature Reserve and, within it, the Anklamer Torfmoor , a protected wetland which is renaturalising after being used for peat extraction. 53°48′16″N 14°08′25″E / 53.80444°N 14.14028°E / 53.80444; 14.14028 Peenestrom The Peenestrom
169-515: Was named. Also, the work resulted in a new island named Kaseburg ( Karsibór ) being cut off from Usedom. After the defeat of Nazi Germany in World War II in 1945, the eastern part of the lagoon became part of Poland, while the western part became part of East Germany . The Kaiserfahrt was renamed Piast Canal , after the Polish Piast dynasty , which first included the region to Poland in
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