Danube

Danube
This article is about the river. For other uses, see Danube (disambiguation).
"Dunărea" redirects here. For other uses, see Dunărea (disambiguation).
Danube
Donau, Dunaj, Dunărea, Donava, Duna, Дунав, Tuna, Дунáй (Dunay)
River
The Iron Gate, on the Serbian-Romanian border (Iron Gates natural park and Đerdap national park)
Countries Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Moldova, Ukraine, Romania
Cities Ulm, Ingolstadt, Regensburg, Linz, Vienna, Bratislava, Győr, Budapest, Vukovar, Novi Sad, Belgrade, Drobeta Turnu-Severin, Rousse, Brăila, Galaţi, Tulcea
Primary source Breg
 - location Martinskapelle, Black Forest, Germany
 - elevation 1,078 m (3,537 ft)
 - length 49 km (30 mi)
 - coordinates 48°05′44″N 08°09′18″E / 48.09556°N 8.155°E / 48.09556; 8.155
Secondary source Brigach
 - location St. Georgen, Black Forest, Germany
 - elevation 940 m (3,084 ft)
 - length 43 km (27 mi)
 - coordinates 48°06′24″N 08°16′51″E / 48.10667°N 8.28083°E / 48.10667; 8.28083
Source confluence
 - location Donaueschingen
 - coordinates 47°57′03″N 08°31′13″E / 47.95083°N 8.52028°E / 47.95083; 8.52028
Mouth Danube Delta
 - coordinates 45°13′3″N 29°45′41″E / 45.2175°N 29.76139°E / 45.2175; 29.76139
Length 2,860 km (1,777 mi)
Depth 54 m (177 ft)
 - Max. depth 178 m (584 ft)
Basin 817,000 km2 (315,445 sq mi)
Discharge for before delta
 - average 6,500 m3/s (229,545 cu ft/s)
Discharge elsewhere (average)
 - Passau 580 m3/s (20,483 cu ft/s)
30 km before town
 - Vienna 1,900 m3/s (67,098 cu ft/s)
 - Budapest 2,350 m3/s (82,989 cu ft/s)
 - Belgrade 4,000 m3/s (141,259 cu ft/s)
Map of Danube River

The Danube (English pronunciation: /ˈdænjuːb/ dan-yoob) is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway.

The river originates in the Black Forest mountain range in Germany as the much smaller Brigach and Breg rivers which join at the German town of Donaueschingen. After that it is known as the Danube and flows southeastward for a distance of some 2,872 km (1,785 mi), passing through four Central and Eastern European capitals, before emptying into the Black Sea via the Danube Delta in Romania and Ukraine.

Known to history as one of the long-standing frontiers of the Roman Empire, the river flows through or acts as part of the borders of ten countries: Germany (7.5%), Austria (10.3%), Slovakia (5.8%), Hungary (11.7%), Croatia (4.5%), Serbia (10.3%), Bulgaria (5.2%), Moldova (1.6%), Ukraine (3.8%) and Romania (28.9%). (The percentages reflect the proportion of the total Danube drainage basin area).[1]

Danube in Šarengrad, Croatia

Contents

Name

The Danube was known in Latin as Danubius, Danuvius, Ister, in Ancient Greek as Ἴστρος (Istros) . The Dacian/Thracian name was Τάναις/Donaris / Donaris (upper Danube) and Istros (lower Danube).[2]

The name Dānuvius is presumably a loan from Celtic (Gaulish), or possibly Iranic. It is one of a number of river names derived from a Proto-Indo-European language word *dānu, apparently a term for "river", but possibly also of a primeval cosmic river, and of a Vedic river goddess (see Danu (Asura)), perhaps from a root *dā "to flow/swift, rapid, violent, undisciplined." Other river names with the same etymology include Don, Donets, Dnieper and Dniestr. Dniepr,(pre-Slavic Danapir by Gothic historian Jordanes) and Dniestr, from Danapris and Danastius, are presumed from Scythian Iranic *Dānu apara "posterior river" and *Dānu nazdya- "anterior river", respectively.[3]

The Ancient Greek Istros was a borrowing from Thracian/Dacian meaning "strong, swift", akin to Sanskrit is.iras "swift".[2]

Since the Norman conquest of England, the English language has used the Latin-derived word Danube. In the languages of the modern countries through which the river flows, it is:

Geography

The Danube discharges into the Black Sea.

Drainage basin

In addition to the bordering countries (see above), the drainage basin includes parts of eight more countries: Bosnia and Herzegovina (4.8%), the Czech Republic (2.5%), Slovenia (2.2%), Switzerland (0.32%), Italy (0.15%), Poland (0.09%), the Republic of Macedonia (0.03%) and Albania (0.03%).[1] The highest point of the drainage basin is the summit of Piz Bernina at the Italy–Switzerland border, 4,049 metres (13,284 ft).

Tributaries

Main article: List of tributaries of the Danube

The Danube's watershed extends into many other countries. Many Danubian tributaries are important rivers in their own right, navigable by barges and other shallow-draught boats. From its source to its outlet into the Black Sea, its main tributaries are (in order):

  1. Iller (entering at Ulm)
  2. Lech
  3. Naab (entering at Regensburg)
  4. Regen (entering at Regensburg)
  5. Isar
  6. Inn (entering at Passau)
  7. Enns
  8. Morava (entering near Devín Castle)
  9. Leitha
  10. Váh (entering at Komárno)
  11. Hron
  12. Ipeľ
  13. Sió
  14. Dráva
  15. Vuka (entering at Vukovar)

15. Tisza
16. Sava (entering at Belgrade)
17. Timiş (entering at Pančevo)
18. Great Morava
19. Caraş
20. Jiu (entering at Bechet)
21. Iskar
22. Olt (entering at Turnu Măgurele)
23. Osam
24. Yantra
25. Vedea
26. Argeş (entering at Olteniţa)
27. Ialomiţa
28. Siret (entering near Galaţi)
29. Prut (entering near Galaţi)

Cities

Origin of the river Danube. The place where two small rivers (Breg and Brigach) unite to form the Danube in Donaueschingen, Germany. The German name of the place is Donauzusammenfluss, meaning "Danube confluence".
The Danube in Ulm as seen from the steeple of Ulm Minster, looking southwest.
The confluence of the Inn (left), Danube (center), and Ilz (right) in Passau.
Danube in Linz.
Budapest on Danube
Ilok Castle on the Danube in Croatia.
16th Century Danube landscape near Regensburg, by Albrecht Altdorfer

The Danube flows through the following countries and cities (ordered from the source to mouth):

The Danube flows through four capital cities (shown in bold), more than any river in the world.

The Danube Bend is a curve of the Danube in Hungary, near the city of Visegrád. The Transdanubian Mountains lie on the right bank (left side of the picture), while the North Hungarian Mountains on the left bank (right side of the picture).

The hydrological parameters of Danube are regularly monitored in Croatia at Batina, Dalj, Vukovar and Ilok.[4]

Islands

Further information: List of islands in the Danube

Sectioning

  • Upper Section: From spring to Devín Gate. Danube remains a characteristic mountain river until Passau, with average bottom gradient 0.0012%, from Passau to Devín Gate the gradient lessens to 0.0006%.
  • Middle Section: From Devín Gate to Iron Gate. The riverbed widens and the average bottom gradient becomes only 0.00006%.
  • Lower Section: From Iron Gate to Sulina, with average gradient as little as 0.00003%.

Modern navigation

The Danube in Budapest
A fisherman in the Danube Delta
Freight ship on the Danube near Vienna
Confluence of Sava into Danube in Belgrade, Serbia

The Danube is navigable by ocean ships from the Black Sea to Brăila in Romania and by river ships to Kelheim, Bavaria, Germany; smaller craft can navigate further upstream to Ulm, Württemberg, Germany. About 60 of its tributaries are also navigable.

Since the completion of the German Rhine–Main–Danube Canal in 1992, the river has been part of a trans-European waterway from Rotterdam on the North Sea to Sulina on the Black Sea (3500 km). In 1994 the Danube was declared one of ten Pan-European transport corridors, routes in Central and Eastern Europe that required major investment over the following ten to fifteen years. The amount of goods transported on the Danube increased to about 100 million tons in 1987. In 1999, transport on the river was made difficult by the NATO bombing of three bridges in Serbia. The clearance of the debris was finished in 2002. The temporary pontoon bridge that hampered navigation was removed in 2005.

At the Iron Gate, the Danube flows through a gorge that forms part of the boundary between Serbia and Romania; it contains the Iron Gate I Hydroelectric Power Station dam, followed at about 60 km downstream (outside the gorge) by the Iron Gate II Hydroelectric Power Station. On 13 April 2006, a record peak discharge at Iron Gate Dam reached 15,400 m³/s.

There are three artificial waterways built on the Danube: the Danube–Tisa–Danube Canal (DTD) in the Banat and Bačka regions (Vojvodina, northern province of Serbia); the 64 km Danube–Black Sea Canal, between Cernavodă and Constanţa (Romania) finished in 1984, shortens the distance to the Black Sea by 400 km; the Rhine-Main-Danube Canal (about 171 km), finished in 1992, linking the North Sea to the Black Sea.

The Danube delta

Main article: Danube Delta

The Danube Delta has been a UNESCO World Heritage Site since 1991. Its wetlands (on the Ramsar list of wetlands of international importance) support vast flocks of migratory birds, including the endangered Pygmy Cormorant (Phalacrocorax pygmaeus). Rival canalization and drainage schemes threaten the delta: see Bastroe Channel.

International cooperation

Ecology and environment

Pelicans in the Danube Delta, Romania
Main article: International Commission for the Protection of the Danube River

The International Commission for the Protection of the Danube River (ICPDR) is an organization consisting of 14 member states (Germany, Austria, the Czech Republic, Slovakia, Slovenia, Hungary, Croatia, Bosnia and Herzegovina, Serbia, Bulgaria, Romania, Moldova, Montenegro and Ukraine) and the European Union. The commission, established in 1998, deals with the whole Danube River Basin, which includes tributaries and the groundwater resources. Its goal is to implement the Danube River Protection Convention by promoting and coordinating sustainable and equitable water management, including conservation, improvement and rational use of waters and the implementation of the EU Water Framework Directive.

Navigation

Main article: Danube Commission

The Danube Commission is concerned with the maintenance and improvement of the river's navigation conditions. It was established in 1948 by seven countries bordering the river. Members include representatives from Austria, Bulgaria, Croatia, Germany, Hungary, Moldova, Slovakia, Romania, Russia, Ukraine, and Serbia, It meets regularly twice a year. It also convenes groups of experts to consider items provided for in the commission's working plans.

The commission dates to the Paris Conferences of 1856 and 1921, which established for the first time an international regime to safeguard free navigation on the Danube.

Geology

Iron Gates, Serbia-Romania border
Iron Gate I Hydroelectric Power Station, Romania-Serbia

Although the headwaters of the Danube are relatively small today, geologically, the Danube is much older than the Rhine, with which its catchment area competes in today's southern Germany. This has a few interesting geological complications. Since the Rhine is the only river rising in the Alps mountains which flows north towards the North Sea, an invisible line beginning at Piz Lunghin divides large parts of southern Germany, which is sometimes referred to as the European Watershed.

Before the last ice age in the Pleistocene, the Rhine started at the southwestern tip of the Black Forest, while the waters from the Alps that today feed the Rhine were carried east by the so-called Urdonau (original Danube). Parts of this ancient river's bed, which was much larger than today's Danube, can still be seen in (now waterless) canyons in today's landscape of the Swabian Alb. After the Upper Rhine valley had been eroded, most waters from the Alps changed their direction and began feeding the Rhine. Today's upper Danube is but a meek reflection of the ancient one.

Since the Swabian Alb is largely shaped of porous limestone, and since the Rhine's level is much lower than the Danube's, today subsurface rivers carry much water from the Danube to the Rhine. On many days in the summer, when the Danube carries little water, it completely oozes away noisily into these underground channels at two locations in the Swabian Alp, which are referred to as the de:Donauversickerung (Danube Sink). Most of this water resurfaces only 12 km south at the Aachtopf, Germany's wellspring with the highest flow, an average of 8500 litres per second, north of Lake Constance—thus feeding the Rhine. The European Water Divide applies only for those waters that pass beyond this point, and only during the days of the year when the Danube carries enough water to survive the sink holes in the Donauversickerung.

Since such large volumes of underground water erode much of the surrounding limestone, it is estimated that the Danube upper course will one day disappear entirely in favor of the Rhine, an event called stream capturing.

History

Istros on the Trajan's column
The oldest bridge across the Danube was constructed by Apollodorus of Damascus between 103-105 CE, directed by Trajan
At Esztergom and Štúrovo, the Danube separates Hungary from Slovakia
River Danube in Vienna
The Danube between Belene and Belene Island, Bulgaria
A look upstream from the Donauinsel in Vienna, Austria during an unusually cold winter (February 2006). A frozen Danube usually occurs just once or twice in a lifetime.
Bratislava does not usually suffer major floods, but the Danube sometimes overflows its right bank

The Danube basin was the site of some of the earliest human cultures. The Danubian Neolithic cultures include the Linear Pottery cultures of the mid-Danube basin. The third millennium BC Vučedol culture (from the Vučedol site near Vukovar, Croatia) is famous for its ceramics. Many sites of the sixth-to-third millennium BC Vinča culture, (Vinča, Serbia) are sited along the Danube. The river was part of the Roman Empire's Limes Germanicus. The Romans often used the river Danube as a northern border for their empire.

Alexander the Great defeated the Triballian king Syrmus and the northern barbarian Thracian and Illyrian tribes by advancing from Macedonia as far as the Danube in 336BC.

Ancient cultural perspectives of the lower Danube

Part of the Danubius or Istros river was also known as (together with the Black Sea) the Okeanos in ancient times, being called the Okeanos Potamos (Okeanos River). The lower Danube was also called the Keras Okeanoio (Gulf or Horn of Okeanos) in the Argonautica by Apollonius Rhodos (Argon. IV. 282). The lower Danube has a slow, deep, wide course, so it can be seen why it was considered as part of the Okeanos.[citation needed]

At the end of the Okeanos Potamos, is the holy island of Alba (Leuke, Pytho Nisi, Isle of Snakes), sacred to the Pelasgian (and later, Greek) Apollo, greeting the sun rising in the east. Hecateus Abderitas refers to Apollo's island from the region of the Hyperboreans, in the Okeanos. It was on Leuke, in one version of his legend, that the hero Achilles was buried (to this day, one of the mouths of the Danube is called Chilia). Old Romanian folk songs recount a white monastery on a white island with nine priests.[5]

Economics

Drinking water

Along its course, the Danube is a source of drinking water for about ten million people. In Baden-Württemberg, Germany, almost thirty percent (as of 2004) of the water for the area between Stuttgart, Bad Mergentheim, Aalen and Alb-Donau (district) comes from purified water of the Danube. Other cities such as Ulm and Passau also use some water from the Danube.

In Austria and Hungary, most water is drawn from ground and spring sources, and only in rare cases is water from the Danube used. Most states also find it too difficult to clean the water because of extensive pollution; only parts of Romania where the water is cleaner still obtain drinking water from the Danube on a regular basis.[citation needed]

Navigation and transport

As "Corridor VII" of the European Union, the Danube is an important transport route. Since the opening of the Rhine–Main–Danube Canal, the river connects the Black Sea with the industrial centers of Western Europe and with the Port of Rotterdam. The waterway is designed for large-scale inland vessels (110×11.45 m) but it can carry much larger vessels on most of its course. The Danube has been partly canalized in Germany (5 locks) and Austria (10 locks). Proposals to build a number of new locks to improve navigation have not progressed, due in part to environmental concerns.

Downstream from the Freudenau River plant's locks in Vienna, canalization of the Danube was limited to the Gabčíkovo dam and locks near Bratislava and the two double Iron Gate locks in the border stretch of the Danube between Serbia and Romania. These locks have larger dimensions (similar to the locks in the Russian Volga river, some 300 by over 30 m). Downstream of the Iron Gate, the river is free flowing all the way to the Black Sea, a distance of more than 860 kilometres.

The Danube connects with the Rhine–Main–Danube Canal at Kelheim, and with the Wiener Donaukanal in Vienna. Apart from a couple of secondary navigable branches, the only major navigable rivers linked to the Danube are the Drava, Sava and Tisa. In Serbia, a canal network also connects to the river; the network, known as the Dunav-Tisa-Dunav canals, links sections downstream.

Fishing

The importance of fishing on the Danube, which was critical in the Middle Ages, has declined dramatically. Some fishermen are still active at certain points on the river, and the Danube Delta still has an important industry.

Tourism

Wachau Valley near Durnstein.

Important tourist and natural spots along the Danube include the Wachau Valley, the Nationalpark Donau-Auen in Austria, Gemenc in Hungary, the Naturpark Obere Donau in Germany, Kopački rit in Croatia, Iron Gate in Serbia and Romania, the Danube Delta in Romania, and the Srebarna Nature Reserve in Bulgaria.

The Danube Bike Trail (also called Danube Cycle Path or the Donauradweg) is a bicycle trail along the river. It is divided into four sections:

  1. Donaueschingen-Passau (559 km)
  2. Passau-Vienna (340 km)
  3. Vienna-Budapest (306 km)
  4. Budapest-Black Sea (1670 km)

Important National Parks

Cultural significance

  • The Danube figures prominently in the Bulgarian National Anthem, as a symbolic representation of the country's natural beauty. In Lithuanian folklore songs appearance of Danube (Dunojus, Dunojėlis) is more common than the appearance of the longest Lithuanian river Neman.
  • Jules Verne's The Danube Pilot (1908) ("Le Pilote du Danube") depicts the adventures of fisherman Serge Ladko as he travels down the river. Algernon Blackwood's The Willows, about a boat excursion on the river, is considered one of the greatest stories in the literature of the supernatural.
  • The river is the subject of the film The Ister (2004) (official site here [1]). Parts of the German road movie Im Juli take place along the Danube. In Nicolas Roeg's 1980 film Bad Timing, the border crossing over the Danube between Bratislava and Vienna is a recurring site in which the romance between Milena (Teresa Russell), Alex (Art Garfunkel) and Milena's husband Stefan (Denholm Elliot) is played out.

See also

    Panoramic image of Danube pictured in Ritopek, suburb of Belgrade, Serbia.

    There are also Hasidic (Chabad Nigunnim) songs which are called "dunai", dating from around 200 years ago. They are often lullabys and are named after the Dunay river. Farmers around the river used to come to the river and sing spiritual songs to thank their god about the great beauty which they saw every day.

    References

    1. ^ a b "Countries of the Danube River Basin". International Commission for the protection of the Danube River. http://www.icpdr.org/icpdr-pages/countries.htm. Retrieved 2010-11-13. 
    2. ^ a b Katičic', Radislav. Ancient Languages of the Balkans, Part One. Paris: Mouton, 1976: 144.
    3. ^ . Julius Pokorny (1959): dā- "fluid, to flow", dānu- f. "river"; Mallory, J.P. and D.Q. Adams. The Encyclopedia of Indo-European Culture. London: Fitzroy and Dearborn, 1997: 486.
    4. ^ "Daily hydrological report". State Hydrometeorological Bureau of the Republic of Croatia. http://hidro.hr/hidro_e.php?id=hidro&param=Podaci_e. Retrieved 2010-09-09. 
    5. ^ Dacia Preistorica, Nicolae Densusianu (1913).

    External links

    General

    International organizations

    Individual cities or countries

    v · d · eThe Danube
    Countries Map indicating the Danube
    Cities
    Tributaries
    Islands
    v · d · eHydrology of Croatia
    Rivers

    Sava • Drava • Kupa • Danube • Bosut • Bednja • Lonja • Česma • Una • Vuka • Korana • Dobra • Cetina • Glina • Karašica • Sutla • Orljava • Odra • Krapina • Krka • Zrmanja • Mura • Mrežnica • Mirna • Neretva • Rječina • Gacka

    		 Waterfall in plitvicka romanceor 3.jpg
    Lakes

    Vrana (Dalmatia) • Dubrava • Peruća • Prokljan • Varaždin • Vrana (Cres) • Krušćica • Plitvice • Baćina
    Valleys, estuaries,
    canyons, wetlands
    Waterfalls

    Skradinski Buk • Štrbački Buk


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