Wien River
Overview
 
The Wien is a river
River
A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 that flows through the city of Vienna
Vienna
Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.723 million , and is by far the largest city in Austria, as well as its cultural, economic, and political centre...

. It is 34 kilometres long (21 miles), of which 15 km are within the city. Its drainage basin covers an area of 230 km² (89 mi²), both in the city and in the neighbouring Wienerwald
Wienerwald
The Vienna Woods are forested highlands that form the northeastern foothills of the Northern Limestone Alps in the states of Lower Austria and Vienna. The long and wide hill range is heavily wooded and a popular recreation area with the Viennese....

.

In German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

, the river is colloquially called the "Wienfluss". Since English uses the name "Vienna" for what in German is called "Wien", in English the river is sometimes called the "Vienna River".

The Wien has its source in the western Wienerwald
Wienerwald
The Vienna Woods are forested highlands that form the northeastern foothills of the Northern Limestone Alps in the states of Lower Austria and Vienna. The long and wide hill range is heavily wooded and a popular recreation area with the Viennese....

 near Rekawinkel and its mouth at the eastern end of the city centre of Vienna, next to the Urania
Urania (Vienna)
The Palace Urania is a public educational institute and observatory in Vienna.It was built according to the plans of Art Nouveau style architect Max Fabiani at the outlet of the Wien River and was opened in 1910 by Franz Joseph I of Austria as an educational facility with a public observatory...

, where it flows into the Donaukanal
Donaukanal
The Donaukanal is a former arm of the river Danube, now regulated as a water channel , within the city of Vienna, Austria...

 ("Danube canal"), a branch of the Danube.

Within the city limits, the river bed consists almost entirely of concrete
Concrete
Concrete is a composite construction material, composed of cement and other cementitious materials such as fly ash and slag cement, aggregate , water and chemical admixtures.The word concrete comes from the Latin word...

, which was installed between 1895 and 1899 in order to stop the devastating flood
Flood
A flood is an overflow of an expanse of water that submerges land. The EU Floods directive defines a flood as a temporary covering by water of land not normally covered by water...

s, sometimes accompanied by cholera
Cholera
Cholera is an infection of the small intestine that is caused by the bacterium Vibrio cholerae. The main symptoms are profuse watery diarrhea and vomiting. Transmission occurs primarily by drinking or eating water or food that has been contaminated by the diarrhea of an infected person or the feces...

, which the river had regularly caused before that time.
 
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