Template:Short description {{#invoke:other uses|otheruses}} Template:Expand German
Template:Infobox river The Lenne ({{#invoke:IPA|main}}) is a tributary of the river Ruhr in the Sauerland hills, western Germany. It has caused flooding in recent years.<ref>Template:Cite journal</ref>
Having its source on top of the Kahler Asten near Winterberg in an intermittent spring at an elevation of Template:Convert, the Lenne ends after a course of 129 km flowing into the Ruhr river near the city of Hagen. With an average discharge of 25 m³/s near its mouth, it is the main tributary of the Ruhr. Template:Citation needed