Enns (river) below the Enns"). Finally, it meets the Danube at Mauthausen and the city of Enns. The Enns is a typical wild water river and draws its water from an area of more than , which is the fifth-largest in Austria. The average outflow at its mouth is . The Anisian Age in the Triassic Period of geological time is named from Anisus, the Latin name of the river Enns. In the middle of the 19th century, canals began to be built along the between Weißenbach and the Gesäuse, in order to make use of the water for agriculture and forestry.
Nera (Danube) Mountains. In this section, the Nera receives its left tributary, the Rudăria, and passes next to many villages (Prilipeț, Dalboșeț, Moceriș), until it reaches Șopotu-Nou, where it sharply turns to the northwest, still curving around the Semenic mountains. It passes next to the villages of Sasca Română, Sasca Montana, Slatina Nera and Naidăș, at which point it becomes the border between Romania and Serbia for the remaining . In the border section, the Nera flows through the depression of Bela Crkva (Belocrkvanska kotlina; Cyrillic: Белоцркванска котлина), and settlements on the Romanian side include Lescovița, Zlatița and Socol, while on the