Rance (river)

River in France

Rance

The Rance in Dinan

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Native name|

* ar Renk (Breton)
* la Rance (French)

Location
Country| France
Physical characteristics
Source|
• location| Brittany
Mouth|

• location

| English Channel

• coordinates

| 48°38′28″N 2°2′26″W﻿ / ﻿48.64111°N 2.04056°W﻿ / 48.64111; -2.04056
Length| 104 km (65 mi)
Basin size| 1,195 km2 (461 sq mi)
Discharge|
• average| 12 m3/s (420 cu ft/s)

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

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:

* Côtes-d'Armor: Collinée, Caulnes, Dinan
* Ille-et-Vilaine: Dinard, Saint-Malo

## Hydrology and water quality

[edit]

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).[citation needed]

## References

[edit]

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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