Wełna (river)
The Wełna is a river in west-central Poland, a right tributary of the Warta river, with a length of 118 kilometres and a basin area of 2,635 km2. Its source is near Gniezno, it passes through Janowiec Wielkopolski, Wągrowiec and Rogoźno, and it flows into the Warta near Oborniki.
