Ysper

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Ysper
Autumn in the Ysperklamm

Autumn in the Ysperklamm

Data
location Waldviertel , Austria
River system Danube
Drain over Danube  → Black Sea
source at Weinsberg
48 ° 22 ′ 56 ″  N , 15 ° 3 ′ 19 ″  E
Source height 980  m above sea level A.
muzzle Ybbs-Persenbeug reservoir (Danube) Coordinates: 48 ° 11 ′ 45 ″  N , 15 ° 0 ′ 10 ″  E 48 ° 11 ′ 45 ″  N , 15 ° 0 ′ 10 ″  E
Mouth height 230  m above sea level A.
Height difference 750 m

Catchment area 164.5 km²
Drain MQ
2.4 m³ / s
Right tributaries Small Ysper

The Ysper , sometimes also written Isper , is a river in the Lower Austrian Waldviertel . It is an orographically left tributary of the Danube and is created by the union of the Kleiner and Großer Ysper in the municipality of Nöchling , whereby the “Große Ysper” can also mean the whole river.

(Big) Ysper

The Große Ysper rises northeast of the Weinsberg (1041 m) in the part of the Weinsberger Wald am Brand (mountain, 1030 m) called Hummelberg at an altitude of 980 m. In a southerly direction it flows through the Ysperklamm and the municipalities of Yspertal , St. Oswald im Yspertal , Nöchling and Hofamt Priel . To the east lies the Ostrong (1060 m). Today it flows into the Danube reservoir of the Ybbs-Persenbeug power plant .

The mean flow rate is 2.4 m³ / s, just before it flows into the Danube, west of Weins (municipality of Hofamt Priel ).

Small Ysper

The Kleine Ysper rises north of Dorfstetten . Flowing in a southerly direction, it marks the border between Upper Austria and Lower Austria between Waldhausen im Strudengau and St. Oswald , before it flows into the Große Ysper in the municipality of Nöchling .

Yspertal

The Yspertal was once flowed through by the Urdonau , which is why the section into the Weitental via Laimbach and Pöggstall was also created by the Ur-Danube.

various

Web links

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

Individual evidence

  1. 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, pp. 19/148. PDF download , accessed July 8, 2018.