The Biber is a right tributary of the Danube

Danube

The Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....

 in Bavaria

Bavaria

Bavaria, formally the Free State of Bavaria is a state of Germany, located in the southeast of Germany. With an area of , it is the largest state by area, forming almost 20% of the total land area of Germany...

, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. The source of the Biber is in the south of the hamlet Matzenhofen in Unterroth

Unterroth

Unterroth is a municipality in the district of Neu-Ulm in Bavaria in Germany....

. The river is 36.8 km long.

First the Biber crosses the forest of Oberroth

Oberroth

Oberroth is a municipality in the district of Neu-Ulm in Bavaria in Germany....

. Then the river flows west along the monastery of Roggenburg

Roggenburg Abbey

Roggenburg Abbey is a Premonstratensian canonry in Roggenburg near Neu-Ulm, Bavaria, in operation between 1126 and 1802, and again from its re-foundation in 1986. Since 1992 it has been an independent priory of Windberg Abbey in Lower Bavaria...

. Afterwards the river flows through several hamlets and the forest Auwald, into the Danube.