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River

Sèvre Niortaise

158 km from source to mouth · France.

FranceFranceFlows into Atlantic Ocean

Follow the riverMonth by month

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

In numbers

Length

158km

Average flow

44m³/s

Basin

3,650km²

Drop

71m

from 71 m to 0 m

Country

1

The journey

From source to mouth

158 km of river and 17 stops on the way: 14 towns and cities on its banks, dams, bridges and the tributaries that feed it.

71 m0 m
Sepvretat 71 m0 km
Nanteuil1,604 people15 km
La Crèche4,883 people33 km
Chauray4,858 people43 km
Niort59,854 people73 km
Magné2,975 people84 km
Mignontributary114 km
Autizetributary118 km
Vendéetributary138 km
Atlantic Oceanat 0 m158 km
050100158 km
  1. 0 kmSepvretat 71 m
  2. 6 kmLa Mothe-Saint-Héray1,860 people
  3. 15 kmNanteuil1,604 people
  4. 24 kmAzay-le-Brûlé1,604 people
  5. 33 kmLa Crèche4,883 people
  6. 43 kmChauray4,858 people
  7. 46 kmSaint-Gelais1,528 people
  8. 50 kmÉchiré3,042 people
  9. 59 kmSaint-Maxire1,172 people
  10. 73 kmNiort59,854 people
  11. 83 kmBessines1,421 people
  12. 84 kmMagné2,975 people
  13. 91 kmCoulon2,203 people
  14. 114 kmMignontributary
  15. 118 kmAutizetributary
  16. 138 kmVendéetributary
  17. 142 kmMarans4,663 people
  18. 158 kmCharron1,756 people
  19. 158 kmAtlantic Oceanat 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 44 m³/s on average: an Olympic pool every 56 seconds. It drops from 71 m to 0 m, 0.4 m per kilometre on average. Its basin covers 3,650 km², about the size of CV. 266,000 people live in it. Highest water: from November to January; lowest: from July to August. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

  • NiortLargest city on its banks · 59,854 people
  • La Rochelle Île de Ré Airport (LRH)Nearest airport with scheduled flights, 59 km from the cityCar hire at LRH airport (La Rochelle)Discover Cars · Affiliate link
  • On the water90 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From May to SeptemberThe best months to visit

Sèvre Niortaise, month by month

Highest water: from November to January

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

110
5°74 mmJan
87
6°63 mmFeb
59
9°53 mmMar
40
12°49 mmApr
35
15°57 mmMay
25
18°50 mmJun
14
20°42 mmJul
20
20°56 mmAug
38
18°66 mmSep
60
13°72 mmOct
100
9°94 mmNov
120
6°86 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 14 m³/s in the lowest month to 120 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 Niortaise: the basin in numbers

3,419 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 1.3% of a year's flow: the river still keeps its natural rhythm.
  • 266,000people live in the basin
  • 78/km²people per km²
  • 66maverage altitude of the basin
  • 788mmof rain a year (basin average)
  • 12.0°Caverage air temperature
  • 3%protected areas
  • 0.1%covered by lakes
  • 0.0km³held in reservoirs

What covers the basin

  • 2% Forest
  • 60% Cropland
  • 12% 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 Niortaise: what you find on the way

  • 5DamsBarrage du Gouffre, Grand Barrage Portes Blanches, Barrage des Enfrenaux and 2 more
  • 121WeirsClapet du Pont Charrault, Seuil Moulin de Courdevent, Clapet Moulin du Tan and 118 more
  • 34LocksEcluse de Comporté, Ecluse de La Roussille, Ecluse des Bourdettes and 31 more
  • 72Boat rampsPort Boinot, Base Nautique de Noron, Passe-bateau and 69 more
  • 10Ferry piersBateau à Chaînes and 9 more
  • 4MarinasBase nautique de Noron, Port de l'Épine, Port de l'Epine and 1 more
  • 4Boat rentalsEmbarcadère de la La Venise Verte, Aria Loisirs, Embarcadère du marais poitevin and 1 more

From OpenStreetMap, within 1.5 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Sèvre Niortaise 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.

  • 12beaches at the mouth and on the banksCoastya
  • 1island off the mouthIslandyas

Beaches (12)

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

  1. Plage Nord19 km away20.0°C
  2. La Plage d'Aytré20 km away20.0°C
  3. Plage de l'Arénault20 km away20.0°C
  4. Plage de la Clavette20 km away20.0°C
  5. Plage des Minimes19 km away20.0°C
  6. Plage du Chef de Baie19 km away20.0°C
  7. Anse de Pampin14 km away · cove20.0°C
  8. Plage Sud20 km away20.0°C

4 more on CoastyaOpen Coastya ↗

Islands off the mouth (1)

Within 30 km of the mouth, by Islandyas

  1. Isle of Ré25 km away85km²

Islandyas is coming soonOpen Islandyas ↗

From space

The source and the mouth, seen from orbit

Sèvre Niortaise: satellite view of the source
The source14 km across
Sèvre Niortaise: 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

Sèvre Niortaise in pictures

Tributaries

Where it flows, and what flows into it

Tributaries (6)

Also: Vendée, Autize, Mignon, Lambon, Egray, Chambon

Where these numbers come from

Name, length, placesWikidata (Q1225928) · 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, 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