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    Danube - Wikipedia

    • The Danube is the second-longest river in Europe, after the Volga in Russia. It flows through Central and Southeastern Europe, from the Black Forest south into the Black Sea. A large and historically important river, it was once a frontier of the Roman Empire. In the 21st century, it connects ten European countries, running through their territories or marking a border. O… 展开

    Names and etymology

    Today the river carries its name from its source confluence in Donaueschingen, Germany, to its discharge into the Black Sea via the Danube Delta in Romania and Ukraine.
    The river was kn… 展开

    Geography

    Classified as an international waterway, it originates in the town of Donaueschingen, in the Black Forest of Germany, at the confluence of the rivers Brigach and Breg. The Danube then flows southeast for about 2,730 km (1,700 … 展开

    Discharge chronology

    Historical average flow to the present day; Measured and reconstructed average water flows from 1742. The reconstructed and observed streamflow (Q – m /s) at Ceatal Izmail for the 1742 to 2022:
    The land draine… 展开

    Modern navigation

    The Danube is navigable by ocean ships from the Black Sea to Brăila in Romania (the maritime river sector), and further on by river ships to Kelheim, Bavaria, Germany; smaller craft can navigate further upstream to … 展开