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River

Rance

102 km from source to mouth · France.

FranceFranceFlows into English Channel

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

102km

Average flow

17m³/s

Basin

1,195km²

Drop

62m

from 62 m to 0 m

Country

1

The journey

From source to mouth

102 km of river and 16 stops on the way: 11 towns and cities on its banks, dams, bridges and the tributaries that feed it.

62 m0 m
Sourceat 62 m0 km
Plumaugat1,041 people4 km
Quédillac1,074 people11 km
Caulnes2,320 people15 km
Évran1,561 people35 km
Dinan14,764 people45 km
Lanvallay3,269 people46 km
English Channelat 0 m57 km
0204057 km
  1. 0 kmSourceat 62 m
  2. 4 kmPlumaugat1,041 people
  3. 11 kmQuédillac1,074 people
  4. 15 kmCaulnes2,320 people
  5. 35 kmÉvran1,561 people
  6. 44 kmLéhon2,708 people
  7. 45 kmDinan14,764 people
  8. 45 kmVieux pont de Dinan
  9. 46 kmLanvallay3,269 people
  10. 47 kmTaden1,909 people
  11. 54 kmPleudihen-sur-Rance2,618 people
  12. 55 kmPlouër-sur-Rance3,416 people
  13. 57 kmPont Saint-Hubert
  14. 57 kmChateaubriand Bridge
  15. 57 kmSaint-Malo marigraph
  16. 57 kmRance Tidal Power Station
  17. 57 kmLa Ville-ès-Nonais1,233 people
  18. 57 kmEnglish Channelat 0 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in France

At the mouth it carries 17 m³/s on average: an Olympic pool every 148 seconds. It drops from 62 m to 0 m, 0.6 m per kilometre on average. Its basin covers 1,195 km², about the size of MQ. 93,000 people live in it. Highest water: from December to January. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

Rance, month by month

Highest water: from December to January

Best months to visit: from May to September.

31
6°69 mmJan
23
6°57 mmFeb
13
8°45 mmMar
6.8
10°41 mmApr
6.7
13°54 mmMay
5.8
16°52 mmJun
3.8
17°48 mmJul
5.6
17°57 mmAug
11
16°67 mmSep
17
13°68 mmOct
26
9°77 mmNov
33
6°81 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 3.8 m³/s in the lowest month to 33 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.

Plan the trip

Plan the trip: boat trips, a bed by the river, a car

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

The basin

Rance: the basin in numbers

1,026 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 0.0% of a year's flow: the river still keeps its natural rhythm.
  • 93,000people live in the basin
  • 91/km²people per km²
  • 82maverage altitude of the basin
  • 749mmof rain a year (basin average)
  • 11.0°Caverage air temperature
  • 0.9%covered by lakes

What covers the basin

  • 65% Cropland
  • 8% Pasture
  • 2% Towns and cities

RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.

Along the river

Rance: what you find on the way

  • 6DamsBarrage de Rophémel, Barrage du Poulichot and 4 more
  • 3Weirs
  • 19LocksCanal d'Ille-et-Rance, La Rance, Ecluse de Léhon and 16 more
  • 17Boat rampsCale de Dinan, Cale de Taden, Cale du Petit Lyvet and 14 more
  • 2MarinasPort de Lyvet, Port de Plouër-sur-Rance
  • 2Boat rentalsLa Ville-ès-Évasion
  • 1River beachesPlage de Vigneux

From OpenStreetMap, within 1.2 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Rance in our other atlases

What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.

  • 6beaches at the mouth and on the banksCoastya
  • 1mountain at the sourcePeakyas
  • 9islands off the mouthIslandyas

Beaches (6)

At the mouth (25 km) and on the banks, by Coastya

  1. Plage du Mole13 km away18.1°C
  2. Plage de l'Éventail13 km away18.1°C
  3. Anse des Rivières9.0 km away · cove18.1°C
  4. Plage Verger19 km away18.4°C
  5. Anse de Dinard12 km away · cove18.1°C
  6. Anse des Étêtés13 km away · cove18.1°C

Open Coastya ↗

Mountains at the source (1)

Within 15 km of the source, by Peakyas

  1. Mont Bel-Air4.5 km away339m

Open Peakyas ↗

Islands off the mouth (9)

Within 30 km of the mouth, by Islandyas

  1. Cézembre17 km away
  2. Grand Bé13 km away0.1km²
  3. Petit Bé14 km away0.0km²
  4. Fort Du Guesclin18 km away
  5. île Agot18 km away
  6. île des Rimains19 km away
  7. île Harbour14 km away
  8. Île des Landes21 km away

1 more on IslandyasIslandyas is coming soonOpen Islandyas ↗

From space

The source and the mouth, seen from orbit

Rance: satellite view of the source
The source14 km across
Rance: satellite view of the mouth
The mouth10 km across

Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.

Photos

Rance in pictures

Dinan port
Unknown author · CC BY-SA 3.0
Dinan le Vieux pont sur la Rance (1)
Pierre André Leclercq · CC BY-SA 4.0
Bords de rance Pleurtuit - Bretagne
Ppleurtuit · CC BY-SA 4.0
Carrelets Rance01
Dominique Dupont · CC BY-SA 4.0

Tributaries

Where it flows, and what flows into it

Tributaries (5)

Also: Routhouan, Linon, Liamou, Néal, Ruisseau de Guinejort

Where these numbers come from

Name, length, placesWikidata (Q1127173) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesCoastya, Peakyas, Islandyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST

Every source and licence is on the data sources page.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit