Wulka

The Wulka is a river of Burgenland, Austria. Its basin area is 402 km2.

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."