Orne (river)




For the river Orne in Lorraine, see Orne (Moselle).


























































Orne

Orne in Caen.jpg
The Orne in Caen

Native name
L'Orne (f)  (French)
Location
Country France
Physical characteristics
Source  
 - location Aunou-sur-Orne
 - elevation 240 m (790 ft)

Mouth  
 - location
 English Channel
 - coordinates
49°16′42″N 0°13′34″W / 49.27833°N 0.22611°W / 49.27833; -0.22611 (English Channel-Orne)Coordinates: 49°16′42″N 0°13′34″W / 49.27833°N 0.22611°W / 49.27833; -0.22611 (English Channel-Orne)
Length 170 km (110 mi)
Basin size 2,932 km2 (1,132 sq mi)
Discharge  
 - average 27.5 m3/s (970 cu ft/s)


The Orne (Ptolemeus Olina[citation needed]) is a river in Normandy, within northwestern France.[1] It discharges into the English Channel at the port of Ouistreham. Its source is in Aunou-sur-Orne, east of Sées. Its main tributaries are the Odon and the Rouvre.


The Orne flows through the following departments and towns:




  • Orne (named after the river): Sées, Argentan


  • Calvados: Thury-Harcourt, Caen, Ouistreham




Contents






  • 1 Name


  • 2 Hydrology and water quality


  • 3 See also


  • 4 Notes





Name


The name of the Orne in Normandy, which is referred to as the Olina by Ptolemy, is a homonym of Fluvius Olne, the Orne saosnoise in Sarthe, which Xavier Delamarre traces back to the Celtic olīnā (elbow).



Hydrology and water quality


The waters of the Orne are typically moderately turbid and brown in colour. pH levels of the Orne have been measured at 8.5[2] at the town of St. Andre sur Orne where summer water temperatures approximate 18 degrees Celsius. Electrical conductivity of the Orne has been measured at 30 micro-Siemens per centimeter.



See also



  • St. Andre sur Orne

  • Canal de Caen à la Mer



Notes









  1. ^ Atlas des Routes de France, Solar Press: Donnees IGN (2007)


  2. ^ Hogan, C Michael, Water quality of freshwater bodies in France, Lumina Press, Aberdeen 2006



  • The Orne at the Sandre database










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