Lenne

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Lenne
The Lenne in Iserlohn-Letmathe.
Location
Country	Germany
Physical characteristics
Source
• location	Sauerland
• elevation	819 m (2,687 ft)
Mouth
• location	Ruhr
• coordinates	51°24′54″N 7°29′31″E / 51.41500°N 7.49194°E / 51.41500; 7.49194
Length	129.0 km (80.2 mi) [1]
Basin size	1,355 km2 (523 sq mi) [1]
Discharge
• average	25 m3/s (880 cu ft/s)
Basin features
Progression	Ruhr→ Rhine→ North Sea
Tributaries
• left	Else (Lenne), Bigge (river), Elspe (Lenne), Grafschaft (Lenne), Uentrop (Lenne)
• right	Nesselbach (Lenne), Nette (Lenne), Sorpe (Lenne)

The Lenne is a tributary of the river Ruhr in the Sauerland hills, western Germany. It has caused flooding in recent years.^[2]

Having its source on top of the Kahler Asten near Winterberg in an intermittent spring at an elevation of 2,687 ft (819 m), 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. ^{[citation needed]}