Rance (river)

The Rance (French pronunciation: [ʁɑ̃s] ; Breton: Renk) is a river of northwestern France. It is 103.6 km (64.4 mi) long.[1] It flows into the English Channel between Dinard and Saint-Malo.

Rance
The Rance in Dinan
Rance (river) is located in France
Rance (river)
Rance (river) is located in Brittany
Rance (river)
Native name
Location
CountryFrance
Physical characteristics
Source 
  locationBrittany
Mouth 
  location
English Channel
  coordinates
48°38′28″N 2°2′26″W
Length104 km (65 mi)
Basin size1,195 km2 (461 sq mi)
Discharge 
  average12 m3/s (420 cu ft/s)

Before reaching the Channel, its waters are barred by a 750 metre long dam forming the Rance tidal power plant.

The river is linked to the Vilaine by means of the Canal d'Ille-et-Rance.

Départements and towns along the river:

Hydrology and water quality

Tributaries of the Rance include:

  • Croqueloir
  • Clergé
  • Fremeur
  • Quinéford

This river has moderate turbidity and its brownish water is somewhat low in velocity due to the slight gradient of the watercourse; pH levels have been measured at 8.13[2] within the city of Dinan and electrical conductivity of the waters have tested at 33 micro-siemens per centimetre. At this reference location, summer flows are typically in the range of 14 cubic metres per second (500 cu ft/s).

References

  1. Sandre. "Fiche cours d'eau - La Rance (J0--0160)".
  2. Hogan, C. Michael, Water quality of freshwater bodies in France, Lumina Press, Aberdeen, Scotland(2006)


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