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.
Kleine Donau (Ilm)
Kleine Donau is a river of Bavaria, Germany. Originally a branch of the Danube, it does not receive water from the Danube anymore. It starts at the confluence of the Wellenbach and the "Flutkanal Kleine Donau", a branch of the Ilm, near Vohburg. It flows into the Danube near Pförring.