The Lenne is a tributary of the river

Ruhr The Ruhr ( ; german: Ruhrgebiet , also ''Ruhrpott'' ), also referred to as the Ruhr area, sometimes Ruhr district, Ruhr region, or Ruhr valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 2,800/km ...

in the

Sauerland The Sauerland () is a rural, hilly area spreading across most of the south-eastern part of North Rhine-Westphalia, in parts heavily forested and, apart from the major valleys, sparsely inhabited. The Sauerland is the largest tourist region in ...

hills, western

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwee ...

. It has caused flooding in recent years. Having its source on top of the ''

Kahler Asten Kahler may refer to: Places * Kahler, Luxembourg, a small town in the commune of Garnich * Kahler Asten, a German mountain range Other uses * Kahler (surname) * Kahler's disease, a cancer otherwise known as ''multiple myeloma'' * Kahler Tremolo Sy ...

'' near

Winterberg Winterberg ( Westphalian: ''Winnenmerg'') is a town in the Hochsauerland district of North Rhine-Westphalia, central Germany and a major winter sport resort of the Wintersport Arena Sauerland. Geography Winterberg is located in the middle o ...

in an intermittent spring at an elevation of , the Lenne ends after a course of 129 km flowing into the

river near the city of

Hagen Hagen () is the 41st-largest city in Germany. The municipality is located in the state of North Rhine-Westphalia. It is located on the south eastern edge of the Ruhr area, 15 km south of Dortmund, where the rivers Lenne and Volme (me ...

. With an average discharge of 25 m³/s near its mouth, it is the main tributary of the

References

Tussen Werdohl en Altena, de Lenne foto11 2017-06-04 15

* Rivers of North Rhine-Westphalia Rivers of Germany {{NorthRhineWestphalia-river-stub