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River

Sèvre Nantaise

142 km from source to mouth · France.

FranceFranceFlows into Loire

Follow the riverMonth by month

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

In numbers

Length

142km

Average flow

9.5m³/s

Basin

2,360km²

Drop

196m

from 163 m to -33 m

Country

1

The journey

From source to mouth

142 km of river and 36 stops on the way: 31 towns and cities on its banks, dams, bridges and the tributaries that feed it.

163 m-33 m
Secondignyat 163 m0 km
Cerizay4,777 people23 km
Saint-Amand-sur-Sèvre1,298 people38 km
Saint-Laurent-sur-Sèvre4,799 people56 km
Mortagne-sur-Sèvre6,428 people66 km
Crûmetributary83 km
Torfou2,023 people84 km
Moinetributary103 km
Clisson7,452 people104 km
Vertou22,921 people130 km
Loireat -33 m142 km
050100142 km
  1. 0 kmSecondignyat 163 m
  2. 7 kmMoncoutant3,029 people
  3. 16 kmLa Forêt-sur-Sèvre2,333 people
  4. 23 kmCerizay4,777 people
  5. 24 kmSaint-Mesmin1,896 people
  6. 34 kmLa Pommeraie-sur-Sèvre1,005 people
  7. 38 kmSaint-Amand-sur-Sèvre1,298 people
  8. 50 kmSaint-Malô-du-Bois1,291 people
  9. 56 kmSaint-Laurent-sur-Sèvre4,799 people
  10. 59 kmviaduc de Barbin
  11. 66 kmMortagne-sur-Sèvre6,428 people
  12. 75 kmSaint-Aubin-des-Ormeaux1,232 people
  13. 77 kmLe Longeron2,004 people
  14. 82 kmTiffauges1,437 people
  15. 83 kmCrûmetributary
  16. 84 kmTorfou2,023 people
  17. 91 kmLa Bruffière3,320 people
  18. 92 kmBoussay2,553 people
  19. 95 kmviaduc de la Doucinière
  20. 100 kmLa Bernardière1,252 people
  21. 100 kmCugand3,189 people
  22. 100 kmGétigné3,326 people
  23. 103 kmMoinetributary
  24. 104 kmPont de la Vallée, Clisson
  25. 104 kmClisson7,452 people
  26. 108 kmGorges3,087 people
  27. 108 kmSaint-Lumine-de-Clisson1,451 people
  28. 111 kmMouzillon2,385 people
  29. 114 kmLe Pallet2,574 people
  30. 115 kmMonnières1,659 people
  31. 121 kmLa Haie-Fouassière4,047 people
  32. 122 kmSaint-Fiacre-sur-Maine1,071 people
  33. 130 kmVertou22,921 people
  34. 133 kmLes Sorinières6,698 people
  35. 134 kmSaint-Sébastien-sur-Loire29,238 people
  36. 140 kmNantes327,734 people
  37. 141 kmRezé39,248 people
  38. 142 kmLoireat -33 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 9.5 m³/s on average: an Olympic pool every 263 seconds. It drops from 163 m to -33 m, 1.4 m per kilometre on average. Its basin covers 2,360 km², about the size of RE. 7.6 million people live in it. Highest water: from December to February; lowest: August. Its dams hold back little of its water (2.5% of a year's flow).

Read more on Wikipedia

Where to start

  • NantesLargest city on its banks · 327,734 people
  • Nantes Atlantique Airport (NTE)Nearest airport with scheduled flights, 8 km from the cityCar hire at NTE airport (Nantes)Discover Cars · Affiliate link
  • On the water45 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • Kayak and canoe2 put-ins and rapids mapped (OpenStreetMap)
  • From May to SeptemberThe best months to visit

Sèvre Nantaise, month by month

Highest water: from December to February

Lowest water: August. Best months to visit: from May to September.

1,600
5°80 mmJan
1,500
6°67 mmFeb
1,300
8°62 mmMar
1,000
11°50 mmApr
770
14°60 mmMay
540
17°46 mmJun
370
19°45 mmJul
330
19°50 mmAug
390
16°64 mmSep
630
12°74 mmOct
1,000
8°87 mmNov
1,400
6°83 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 330 m³/s in the lowest month to 1,600 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

Sèvre Nantaise: the basin in numbers

114,089 km² of land send their water to this river. This is what lives on it.

Lightly regulatedReservoirs can hold 2.5% of a year's flow.
  • 7.6millionpeople live in the basin
  • 67/km²people per km²
  • 289maverage altitude of the basin
  • 751mmof rain a year (basin average)
  • 10.5°Caverage air temperature
  • 14%protected areas
  • 0.2%covered by lakes
  • 0.8km³held in reservoirs

What covers the basin

  • 17% Forest
  • 38% Cropland
  • 22% 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

Sèvre Nantaise: what you find on the way

  • 10DamsBarrage Poids and 9 more
  • 63WeirsChaussée de Thouet, Chaussée de Pilet, Chaussée de la Motte and 60 more
  • 8LocksEcluse de Saint-Félix, Canal Saint-Félix and 6 more
  • 1Waterfalls
  • 1Rapids
  • 1Canoe put-ins
  • 31Boat rampsPort de la Cantrie, Cale de Beautour and 29 more
  • 5Ferry piersBas-Chantenay, Trentemoult Sablières, Trentemoult Roquios and 2 more
  • 4MarinasPort Saint-Félix, Ponton de Versailles, Port de Trentemoult and 1 more
  • 5Boat rentalsLÎlôt sur Sèvre, Canoé Kayak Clisson, Canoë Kayak Vertou and 2 more

From OpenStreetMap, within 2.4 km of the river. Not mapped is not the same as not there.

From space

The source and the mouth, seen from orbit

Sèvre Nantaise: satellite view of the source
The source14 km across
Sèvre Nantaise: satellite view of the mouth
The mouth46 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

Sèvre Nantaise in pictures

Sèvre Nantaise near Le Longeron
User:julio · CC BY-SA 2.5
Pont de la D160 au-dessus de la Sèvre Nantaise
Surkål · CC BY-SA 4.0
Pont sur la Sèvre Nantaise (Rochard)
Surkål · CC BY-SA 4.0
Église Saint-Pierre de Mortagne-sur-Sèvre
Spouik · CC BY-SA 4.0

Where these numbers come from

Name, length, placesWikidata (Q598322) · 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

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.

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