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For other uses, see Lenne (disambiguation).
The Lenne in Iserlohn-Letmathe.
Origin Sauerland
Mouth Ruhr
51°24′54″N 7°29′31″E / 51.41500°N 7.49194°E / 51.41500; 7.49194Coordinates: 51°24′54″N 7°29′31″E / 51.41500°N 7.49194°E / 51.41500; 7.49194
Basin countries Germany
Length 128 km
Source elevation 819 m
Avg. discharge 25 m³/s
Basin area 1,353 km²

The Lenne River is a tributary of the Ruhr River, and has caused flooding in recent years.[1]

Having its source on top of the Kahler Asten near Winterberg in an intermittent spring at an elevation of 2,687 feet, the Lenne ends after a course of 128 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.[citation needed]


  1. ^ H. GÔPPERT, J. IHRINGER & E. J. PLATE, and G. MORGENSCHWEIS (April 1998). "Flood forecast model for improved reservoir management in the Lenne River catchment, Germany". Hydrological Sciences—Journal—des Sciences Hydrologiques (Pub) 43 (2): 215. doi:10.1080/02626669809492119. Retrieved 14 February 2015. 
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