The Enns (German pronunciation:[ɛns]ⓘ) is a southern tributary of the river Danube in Austria, joining northward at the city of Enns. It forms much of the border between the states of Lower Austria and Upper Austria. The Enns spans 253 kilometres (157 mi), in a flat-J-shape.[2] It flows from its source near the village Flachau, generally eastward through Radstadt, Schladming, and Liezen, then turns north near Hieflau, to flow past Weyer and Ternberg through Steyr, and further north to the Danube at Enns (see map in References).[2]
Name
It was known in Latin as Anisus or Anasus,[3][4] of uncertain origin; Anreiter et al. tried to link it to an Indo-European *on- and the hydronymic suffix *-is-.[5] Later sources call it Ensa or Enisa.[6] Others have linked it to Upper Danubian Vasconic *an, "water."[7] Another possible link is Greek ᾰ̓νῠστός (anystos, "useful").[8] The West Slavic languages have different names for the river: in Czech it is called the Enže;[9] in Slovak, the Enža; and in Polish, the Aniza.
Geography
The Enns has its source in the Radstädter Tauern mountains in the Austrian state of Salzburg. In a valley which developed during the ice age, it flows at the border between the Northern Limestone Alps and the Central Eastern Alps on an eastern trajectory through Styria, where it passes the Dachstein group at its southern side. Between Admont and Hieflau, it takes a turn to the North and passes through the Gesäuse, a gorge of a length of 15 km (9.3 mi), where it penetrates the limestone of the Ennstaler Alpen. Flowing to the north from there on, it reaches the state of Upper Austria at the mouth of the Laussabach [de]. North of Steyr, it forms the border between Upper Austria and Lower Austria (formerly also known as Austria above the Enns and Austria below the Enns). Finally, it meets the Danube at Mauthausen and the city of Enns. It is the longest river solely in Austria.
The Anisian Age in the Triassic Period of geological time is named from Anisus, the Latin name of the river Enns.
History
In the middle of the 19th century, canals began to be built along the 70 km (43 mi) between Weißenbach and the Gesäuse, in order to make use of the water for agriculture and forestry.
In total, ten power plants with a total generative power of 345 megawatts have been built by the Ennskraftwerke AG.
A major transit route connecting Germany and Slovenia through Austria runs through the Enns valley.
The so-called Eisenstraße ("iron road") runs along the river between Hieflau and Enns, along which iron ore has been transported from the Styrian Erzberg ("ore mountain") to the steel mill in Linz. The 263km Enns Radweg cyclepath [13] follows the river starting at Flachauwinkl and finishing where the Enns enters the Danube.
^P. Anreiter, M. Haslinger and U. Roider, “The names of the eastern Alpine region mentioned in Ptolemy”, in Ptolemy: Towards a linguistic atlas of the earliest Celtic place-names in Europe, ed. D.N. Parsons and P. Sims-Williams, Aberystwyth, 2000, p. 129, note 53.