List of tributaries of the Danube
The Danube is Europe's second-longest river. It starts in the Black Forest in Germany as two smaller rivers—the Brigach and the Breg—which join at Donaueschingen, and it is from here that it is known as the Danube, flowing generally eastwards for a distance of some , passing through several Central and Eastern European capitals, before emptying into the Black Sea via the Danube Delta in Romania.
Podunavlje
Podunavlje (Serbian: Подунавље / "Podunavlje", ) is the name of the Danube river basin parts located in Serbia (Vojvodina, Belgrade and Eastern Serbia) and Croatia (Slavonia, Syrmia, and Baranja). Podunavlje is located on the southern edge of Pannonian Basin. In its wider meaning, the term is used in Serbian and Croatian as a description for the area around the entire flow of the river Danube.