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 Gorge-Beușnița National Park ("Zingel streber"), Balkan loach ("Cobitis elongata"), Kessler's gudgeon ("Gobio kessleri") or Amur bitterling ("Rhodeus sericeus amarus"). Nera Gorge-Beușnița National Park The Nera Gorge-Beușnița National Park () (national park category II IUCN) is a protected area situated in Romania, in Caraş-Severin County. The Natural Park is located at the south-west limit of the country, in the south of the Anina Mountains (group mountain included in Banat Mountains), in Caraș-Severin County, on the middle course of Nera River and on the upper Beu River. Nera Gorge-Beușnița National Park with an area of 36.758 ha was declared natural protected area by the "Law