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. Originating in Germany, the Danube flows southeast for 2,850 km (1,770 mi), passing through or bordering Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine. Among the many cities on the river are four national capitals: Vienna, Bratislava, Budapest, and Belgrade. Its drainage basin amounts to 817,000 km2 (315,000 sq mi) and extends into nine more countries.
The Sommerkahl is a small river in the northern Spessart in Lower Franconia, Bavaria, Germany. Near Langenborn the Sommerkahl empties from the left into the Kahl. Together with Westerbach, Reichenbach and Geiselbach the Sommerkahl is one of the largest tributaries of the Kahl.
Schwarzenbach is a river of Baden-Württemberg and of Bavaria, Germany.
The Berchtesgadener Ache is a river of Bavaria, Germany and of Salzburg, Austria. It is formed at the confluence of the Ramsauer Ache and the Königsseer Ache in Berchtesgaden. It flows into the Salzach near Anif.
Fischbach is a river of the Ammergau Alps, southwest of Oberammergau, in Bavaria, Germany and at the border between Bavaria and Tyrol, Austria.
Röderbach is a river of Bavaria, Germany. It is a left tributary of the Aschaff near Goldbach.
Seebach is a river in Ismaning, Bavaria, Germany. The origin of the Seebach is near the Mittlere-Isar-Kanal. It flows through Ismaning and enters the Isar from the right.
Steinbach is a river of Bavaria, Germany and of Salzburg, Austria. It is a tributary of the Saalach between Unken and Schneizlreuth.
The Weißach is a 33.5-kilometre-long (20.8 mi), right-hand, eastern tributary of the Bregenzer Ach in the German and Austrian Alps. It forms a very short section of the Austria–Germany border, just south of the confluence with the Eibelebach. It flows into the Bregenzer Ach near Doren.
Weißbach is a river of Bavaria, Germany and Salzburg, Austria. Its source lies at the northern slope of the Dreisesselberg which is one of the Latten Mountains. Part of its course forms a section of the Austria–Germany border. It discharges in Weißbach, a district of Bad Reichenhall, into the Grabenbach, which itself discharges into the Saalach.
Rottach is a river of Bavaria, Germany. It is a right tributary of the Iller at the boundary between the municipalities Sulzberg and Rettenberg. Note that there is another river also called Rottach 18 kilometres downstream which is a left tributary of the Iller.
The border between the modern states of Austria and Germany has a length of 815.9 km (507.0 mi), or 815.0 km (506.4 mi) respectively. It is the longest international border of Austria and the second longest border of Germany with another country.
Kleine Isar is a river of Bavaria, Germany. It is a branch of the Isar in the city of Landshut.
Klingenbach is a river of Bavaria, Germany. It is a left tributary of the Igelsbach.
Langbach is a small river of Bavaria, Germany. It is a right tributary of the Mauerner Bach near Nandlstadt.
Rottach is a river of Bavaria, Germany. It is a left tributary of the Iller at Kempten. Note that there is another river also called Rottach 18 kilometres upstream which is a right tributary of the Iller.
Hungerbach is a small river of Bavaria, Germany. It is a right tributary of the Altmühl at Dietfurt in Mittelfranken.
Ranna is a river of Bavaria, Germany and of Upper Austria, Austria.
Katzbach is a river of Bavaria, Germany.
