Aist (river)

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Aist
The Aist just below the confluence of the Feld- and Waldaist at Hohensteg

The Aist just below the confluence of the Feld- and Waldaist at Hohensteg

Data
location Mühlviertel , Upper Austria ; Granite and gneiss highlands (Böhm. Masse)
River system Danube
Drain over Danube  → Black Sea
origin The confluence of Feldaist and Waldaist in Hohensteg (Gem. Tragwein )
48 ° 19 ′ 12 ″  N , 14 ° 33 ′ 55 ″  E
Source height approx.  310  m above sea level A.
muzzle between Mauthausen and Au an der Donau (Gem. Naarn ) in the Danube coordinates: 48 ° 13 '51 "  N , 14 ° 33' 54"  E 48 ° 13 '51 "  N , 14 ° 33' 54"  E
Mouth height approx.  240  m above sea level A.
Height difference approx. 70 m
Bottom slope approx. 5.1 ‰
length 13.8 km
Catchment area 636.4 km²
Discharge at the Schwertberg gauge (kaolin plant)
A Eo : 604.7 km²
Location: 9.05 km above the mouth
NNQ (12/30/2005)
MNQ 1983–2010
MQ 1983–2010
Mq 1983–2010
MHQ 1983–2010
HHQ (08/13/2002)
420 l / s
1.56 m³ / s
6.34 m³ / s
10.5 l / (s km²)
68.8 m³ / s
337 m³ / s
Communities Schwertberg
FFH area

The Aist is a stream and river system in the eastern Mühlviertel in Upper Austria , which drains an area of ​​636 km².

Location, landscape and course

In Hohensteg (south of Pregarten ) the Feld- and Waldaist unite to form the Aist. The Aist has a length of 14 kilometers to its confluence with the Danube near Schwertberg . Together with the Waldaist, it has a length of around 72 km.

On its route, the Aist flows through the protected Natura 2000 area Waldaist-Naarn (fauna-flora-habitat area).

etymology

Old documents, such as the Wilhelmine deed of donation, show that the name "Aist" was derived from a Slavic river name. The Mühlviertel, like many other parts of Europe, were then settled by Slavic peoples. The river appears for the first time in a deed of donation as "Agasta" in 853. In 983 he is called "Agesta". The prefix “ag-” meant “drive”, “quickly”.

Places on the Aist

history

The entire Aist valley was devastated by the flood of the century in August 2002 .

various

literature

  • Klaus Berg, Clemens Gumpinger, Simonetta Siligato: Defense register of the Aist and its tributaries. Water protection report 41st Office of the Upper Austrian Provincial Government, Directorate Environment and Water Management, Department Surface Water Management, Linz 2009, 250 pages ( PDF; 5,844 kB on land-oberoesterreich.gv.at).

Web links

Commons : Aist  - collection of images, videos and audio files

Individual evidence

  1. Digital Upper Austrian Room Information System (DORIS)
  2. BMLFUW (Hrsg.): Area directory of the river areas: Danube area from the Enns to the Leitha. In: Contributions to Austria's Hydrography Issue 62, Vienna 2014, p. 7. PDF download , accessed on July 8, 2018.
  3. Federal Ministry of Agriculture, Forestry, Environment and Water Management (ed.): Hydrographisches Jahrbuch von Österreich 2010. 118th volume. Vienna 2012, S. OG, PDF (12.6 MB) on bmlrt.gv.at (yearbook 2010)