Editing Lenne (section)

{{Short description|River in Germany}}
{{Other uses}}
{{Expand German|topic=geo|date=January 2018|Lenne (Ruhr)}}

{{Infobox river
  | name              = Lenne
  | image             = Letmathe-Lennebruecke1-Asio.JPG
  | image_caption     = The Lenne in [[Iserlohn|Iserlohn-Letmathe]].
  | source1_location  = [[Sauerland]] 
  | mouth_location    = [[Ruhr (river)|Ruhr]]
  | mouth_coordinates = {{coord|51|24|54|N|7|29|31|E|display=inline,title}}
  | progression       = {{PRuhr}}
  | subdivision_type1 = Country
  | subdivision_name1 = [[Germany]]
  | length_km = 129.0|length_ref={{GeoQuelle|DE-NW|GSK3C}}
  | source1_elevation = {{convert|819|m|abbr=on}}
  | discharge1_avg    = {{convert|25|m3/s|abbr=on}}
  | basin_size_km2 = 1,355|basin_size_ref={{GeoQuelle|DE-NW|GSK3C}}
  | tributaries_left  = [[Else (Lenne)]], [[Bigge (river)]], [[Elspe (Lenne)]], [[Grafschaft (Lenne)]], [[Uentrop (Lenne)]]
  | tributaries_right = [[Nesselbach (Lenne)]], [[Nette (Lenne)]], [[Sorpe (Lenne)]]
}}
The '''Lenne''' ({{IPA|de|ˈlɛnə|-|De-Lenne.ogg}}) is a tributary of the river [[Ruhr (river)|Ruhr]] in the [[Sauerland]] hills, western [[Germany]]. It has caused flooding in recent years.<ref>{{cite journal|first1 = H. | last1 = Gôppert | first2 = J. | last2 = Ihringer | first3 = E. J. | last3 =Plate | first4 = G. | last4 = Morgenschweis|date=April 1998|title=Flood forecast model for improved reservoir management in the Lenne River catchment, Germany|journal=Hydrological Sciences|volume=43|issue=2|page=215|doi=10.1080/02626669809492119|citeseerx = 10.1.1.408.1817 }}</ref>

Having its source on top of the ''[[Kahler Asten]]'' near [[Winterberg]] in an intermittent spring at an elevation of {{convert|2,687|ft|abbr=on}}, the Lenne ends after a course of 129&nbsp;km flowing into the [[Ruhr (river)|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 (river)|Ruhr]]. {{citation needed|date=February 2015}}