| Rance | |
| Map: | Rance_cours_d'eau.png |
| Pushpin Map: | France#France Bretagne |
| Mouth Coordinates: | 48.6411°N -2.0406°W |
| Subdivision Type1: | Country |
| Length: | 104km (65miles) |
| Discharge1 Avg: | 12m3/s |
| Basin Size: | 1195km2 |
The Rance (in French pronounced as /ʁɑ̃s/; Breton: Renk, in Breton pronounced as /ˈrẽŋk/) is a river of northwestern France. It is 103.6km (64.4miles) long. It 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:
Tributaries of the Rance include:
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[1] 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 500cuft/s.