Danube
Europe's second-longest river, a historic frontier and trade route.
The Danube is a river in Europe, the second-longest after the Volga. It flows through Central and Southeastern Europe, from the Black Forest of Germany south through the Danube Delta in Romania into the Black Sea. A large and historically important river, it was once a frontier of the Roman Empire.
- source
- Confluence of Brigach and Breg in Donaueschingen, Black Forest, Germany
- mouth
- Danube Delta, Romania and Ukraine, into the Black Sea
- countries_touched
- 10 (Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, Ukraine)
- capital_cities
- Vienna, Bratislava, Budapest, Belgrade
Lore & Background
It passes through four national capitals: Vienna, Bratislava, Budapest, and Belgrade. Its drainage basin extends into nine additional countries beyond the ten it borders or traverses. Since ancient times, the Danube has been a traditional trade route. It was known to the ancient Greeks as the Istros, and its Latin name Danubius is the source of most modern names. The river is linked to the North Sea via the Rhine–Main–Danube Canal, connecting the Danube at Kelheim with the Main at Bamberg. It is also an important source of hydropower and drinking water. The Danube river basin hosts diverse fish species including pike, zander, huchen, wels catfish, burbot, tench, various carp and sturgeon, salmon, trout, and euryhaline fish such as European seabass, mullet, and eel in its delta and lower portion.
Reader's Guide
The Danube's significance lies in its role as a major European waterway, connecting ten countries and serving as a historic frontier of the Roman Empire. Its four capital cities—Vienna, Bratislava, Budapest, and Belgrade—highlight its geopolitical importance. The Danube also provides hydropower and drinking water, and its diverse fish populations include sturgeon, salmon, and eel. The river's name derives from the Celtic 'Danu' or 'Don', with cognates across Indo-European languages, reflecting its ancient cultural and linguistic impact. The Danube Delta in Romania and Ukraine is a distinctive geographical feature where the river discharges into the Black Sea.
Did You Know?
- The Danube is the second-longest river in Europe after the Volga.
- It flows through four national capitals: Vienna, Bratislava, Budapest, and Belgrade.
- The Danube was once a frontier of the Roman Empire.
- Its name derives from the Celtic 'Danu' or 'Don', both Celtic deities.
Frequently Asked Questions
What is the Danube?
The Danube is Europe's second-longest river, stretching from the Black Forest in Germany through Central and Southeastern Europe before emptying into the Black Sea via the Danube Delta. It is the most internationally shared waterway on the continent, passing through ten countries.
Where does the Danube start and where does it end?
Its source lies at the meeting point of the Brigach and Breg streams in Donaueschingen, Germany, and its mouth is the Danube Delta in Romania and Ukraine, where the water flows into the Black Sea.
Which countries does the Danube flow through?
The Danube passes through or borders ten nations: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine. No other European river crosses as many international boundaries.
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