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.
Schwarze Laber
The Schwarze Laber is a river in Bavaria, Germany, and a left tributary of the Danube. Its source is near Neumarkt in der Oberpfalz. It is approx. 78 km long. It flows southeast through the small towns Parsberg, Beratzhausen, Laaber and Deuerling. It flows into the Danube in Sinzing.