Wulka
The 883rd longest river in the world
The Wulka (German pronunciation: [ˈvʊlka]) is a river of Burgenland, Austria. Its basin area is 402 km2 (155 sq mi). The river springs near Forchtenstein and the border to Lower Austria. It flows through Trausdorf an der Wulka and discharges near Donnerskirchen into Lake Neusiedl, in former times a runoff-free lake, but nowadays drained by an artificial channel, the Hanság-főcsatorna, into the Danube. An article in the Journal of Hydrology stated that "Waste water treatment plants contributed up to 68% of monthly flow of River Wulka into the lake."
Flows through: Austria.
River data from Wikidata (CC0); lengths normalised to a common unit.