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ODER (Lat. Viadua; Slavonic, Vjodr)

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Originally appearing in Volume V20, Page 3 of the 1911 Encyclopedia Britannica.
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ODER (See also:Lat. Viadua; See also:Slavonic, Vjodr)  , a See also:river of See also:Germany, rises in See also:Austria on the Odergebirge in the Moravian tableland at a height of 1950 ft. above the See also:sea, and 14 M. to the See also:east of See also:Olmutz . From its source to its mouth in the Baltic it has a See also:total length of 56o m., of which 480 m.'are navigable for See also:barges, and it drains an See also:area of 43,300 sq. m . The first 45 M. of its course See also:lie within See also:Moravia; for the next 15 m. it forms the frontier between Prussian and See also:Austrian See also:Silesia, while the remaining 500 M. belong to See also:Prussia, where it traverses the provinces of Silesia, See also:Brandenburg and See also:Pomerania . It flows at first towards the See also:south-east, but on quitting Austria turns towards the See also:north-See also:west, maintaining this direction as far as See also:Frankfort-on-See also:Oder, beyond which its See also:general course is nearly due north . As far as the frontier the Oder flows through a well-defined valley, but, after passing through the See also:gap between the Moravian mountains, and the Carpathians and entering the Silesian See also:plain, its valley is wide and shallow and its See also:banks generally See also:low . In its See also:lower course it is divided into numerous branches, forming many islands . The See also:main channel follows the See also:left See also:side of the valley and finally expands into the Pommersches, or Stettiner Haff, which is connected with the sea by three arms, the Peene, the See also:Swine and the Dievenow, forming the islands of Usedem and See also:Wollin . The Swine, in the See also:middle, is the main channel for See also:navigation . The See also:chief tributaries of the Oder on the left See also:bank are the Oppa, Glatzer See also:Neisse, Katzbach, See also:Bober and Lausitzer Neisse; on the right bank the Malapane, Bartsch and See also:Warthe . Of these the only one of importance for navigation is the Warthe, which through the See also:Netze is brought into communication with the See also:Vistula . The Oder is also connected by canals with the See also:Havel and the See also:Spree . The most important towns on its banks are See also:Ratibor, See also:Oppeln, See also:Brieg, See also:Breslau, See also:Glogau,-Frankfort, See also:Custrin and See also:Stettin, with the seaport of See also:Swinemunde at its mouth .

Glogau, Custrin and Swinemunde are strongly fortified . The earliest important undertaking with a view of improving the waterway was due to the initiative of See also:

Frederick the See also:Great, who recommended the diversion of the river into a new and straight channel in the swampy See also:tract of See also:land known as the Oderbruch, near Custrin . The See also: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 the See also:canal, 12 M. in length, which is known as the New Oder . The river at See also:present begins to be navigable for barges at Ratibor, where it is about See also:loo ft. wide, and for larger vessels at Breslau, and great exertions are made by the See also:government to deepen and keep open the channel, which still shows a strong tendency to choke itself with See also:sand in certain places . The alterations made of See also:late years consist of three systems of See also:works: (1) The canalization of the main stream (4 m.) at Breslau, and from the confluence of the Glatzer Neisse to the mouth of the Klodnitz canal, a distance of over 50 M . These See also:engineering works were completed in 1896 . (2) In 1887–1891 the Oder-Spree canal was made to connect the two See also:rivers named . The canal leaves the Oder at See also:Furstenberg (132 M. above its mouth) at an See also:altitude of 93 ft., and after 15 M. enters the See also:Friedrich-Wilhelm canal (134 ft.) . After coinciding with this for 7 m., it makes another cut of 5 M. to the Spree at See also:Furstenwalde' (126 ft.) . Then it follows the Spree for 12 m., and at See also:Gross Tranke (121 ft.) passes out and goes to See also:Lake Seddin (106 ft.), 15 m . (3) The deepening and regulation of the mouth and lower course of the stream, consisting of the Kaiserfahrt, 3 M. See also:long, affording a waterway between the Stettiner Haff and the river Swine for the largest ocean-going vessels; a new cut, 44 M. long, from Vietzig on the Stettiner Haff to Wollin See also:Island; the Parnitz-Dunzig and Dunzig-Oder canals, together 1 m. long, constituting the immediate approach to Stettin . Vessels See also:drawing 24 ft. are now able to go right up to Stettin .

In 1905 a project was sanctioned for improving the communication between See also:

Berlin and Stettin by widening and deepening the lower course of the river and then connecting this by a canal with Berlin . Another project, See also:born at the same See also:time, is one for the canalization of the upper course of the Oder . About 4,000,000 tons of merchandize pass through Breslau (up and down) on the Oder in the See also:year . See Der Oderstrom, sein Stromgebiet and See also:seine wichtigsten Nebenflusse; hydrographische, wasserwirtschaftliche and wasserrechtliche Darstellung (Berlin, 1896) .

End of Article: ODER (Lat. Viadua; Slavonic, Vjodr)
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