Basin size 2,932 km (1,132 sq mi) Discharge 27.5 m³/s Bridges Viaduc de Calix | Length 170 km Basin area 2,932 km² | |
 | ||
Main source Aunou-sur-Orne240 m (790 ft) | ||
The Orne (Ptolemeus Olina) is a river in Normandy, within northwestern France. 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.
Contents
Map of Orne, France
The Orne flows through the following departments and towns:
NameEdit
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 qualityEdit
The waters of the Orne are typically moderately turbid and brown in colour. pH levels of the Orne have been measured at 8.5 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.