Lenne

Left: Else (Lenne) , Bigge (river) , Elspe (Lenne) , Grafschaft (Lenne) , Uentrop (Lenne)
Right: Nesselbach (Lenne) , Nette (Lenne) , Sorpe (Lenne)

Lenne
	The Lenne in Iserlohn-Letmathe.
Country	Germany
Physical characteristics
Main source	Sauerland; 819 m (2,687 ft)
River mouth	Ruhr; 51°24′54″N 7°29′31″E / 51.41500°N 7.49194°ECoordinates: 51°24′54″N 7°29′31″E / 51.41500°N 7.49194°E
Length	129.0 km (80.2 mi) [1]
Discharge	Average rate:; 25 m3/s (880 cu ft/s);
Basin features
Progression	Ruhr→ Rhine→ North Sea
Basin size	1,355 km2 (523 sq mi) [1]
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.

References

1 2 Hydrographic Directory of the NRW State Office for Nature, the Environment and Consumer Protection (Gewässerverzeichnis des Landesamtes für Natur, Umwelt und Verbraucherschutz NRW 2010) (xls; 4.67 MB)
↑ Gôppert, H.; Ihringer, J.; Plate, E. J.; Morgenschweis, G. (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. CiteSeerX 10.1.1.408.1817. doi:10.1080/02626669809492119.

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[DE-NW_GSK3C-1] 1 2 Hydrographic Directory of the NRW State Office for Nature, the Environment and Consumer Protection (Gewässerverzeichnis des Landesamtes für Natur, Umwelt und Verbraucherschutz NRW 2010) (xls; 4.67 MB)

[2] Gôppert, H.; Ihringer, J.; Plate, E. J.; Morgenschweis, G. (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. CiteSeerX 10.1.1.408.1817. doi:10.1080/02626669809492119.