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River

Clain

144 km from source to mouth · France.

FranceFranceFlows into Vienne

Follow the riverMonth by month

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

In numbers

Length

144km

Average flow

20m³/s

Basin

2,965km²

Drop

109m

from 159 m to 50 m

Country

1

The journey

From source to mouth

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

159 m50 m
Hiesseat 159 m0 km
Chabanais1,889 people16 km
Confolens3,104 people39 km
Availles-Limouzine1,399 people54 km
Lussac-les-Châteaux2,711 people92 km
Chauvigny7,526 people114 km
Vouneuil-sur-Vienne1,971 people135 km
Vienneat 50 m144 km
050100144 km
  1. 0 kmHiesseat 159 m
  2. 0 kmSaint-Junien11,553 people
  3. 16 kmChabanais1,889 people
  4. 21 kmExideuil-sur-Vienne1,055 people
  5. 39 kmConfolens3,104 people
  6. 54 kmAvailles-Limouzine1,399 people
  7. 92 kmLussac-les-Châteaux2,711 people
  8. 114 kmChauvigny7,526 people
  9. 120 kmBonnes1,573 people
  10. 130 kmBonneuil-Matours1,927 people
  11. 135 kmVouneuil-sur-Vienne1,971 people
  12. 142 kmCenon-sur-Vienne1,835 people
  13. 144 kmVienneat 50 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 20 m³/s on average: an Olympic pool every 123 seconds. It drops from 159 m to 50 m, 0.8 m per kilometre on average. Its basin covers 2,965 km², about the size of LU. 384,000 people live in it. Highest water: from December to February. Its dams hold back little of its water (6.8% of a year's flow).

Read more on Wikipedia

Where to start

Clain, month by month

Highest water: from December to February

Best months to visit: from May to September.

120
4°78 mmJan
110
5°72 mmFeb
84
8°65 mmMar
65
11°64 mmApr
56
14°76 mmMay
42
17°60 mmJun
27
19°52 mmJul
20
19°63 mmAug
30
16°68 mmSep
50
12°71 mmOct
81
8°85 mmNov
100
5°84 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 20 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

Clain: the basin in numbers

6,242 km² of land send their water to this river. This is what lives on it.

Lightly regulatedReservoirs can hold 6.8% of a year's flow.
  • 384,000people live in the basin
  • 62/km²people per km²
  • 354maverage altitude of the basin
  • 955mmof rain a year (basin average)
  • 10.7°Caverage air temperature
  • 23%protected areas
  • 0.3%covered by lakes
  • 0.1km³held in reservoirs

What covers the basin

  • 32% Forest
  • 15% Cropland
  • 27% 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

Clain: what you find on the way

  • 4DamsBarrage des Charraux, Barrage de Jousseau, Barrage de la Roche and 1 more
  • 34WeirsGué de la Biche and 33 more
  • 9Boat rampsLe Moulin de Gady and 8 more
  • 1Boat rentals
  • 1River beachesPlage de Bonneuil-Matours

From OpenStreetMap, within 1.7 km of the river. Not mapped is not the same as not there.

From space

The source and the mouth, seen from orbit

Clain: satellite view of the source
The source14 km across
Clain: satellite view of the mouth
The mouth11 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

Clain in pictures

Chasseneuil-du-Poitou Clain
Arseni Mourzenko · CC BY 3.0
Chasseneuil-du-Poitou le Clain
Havang(nl) · CC0
Poitiers - Le Clain à Tison
Jmdigne · CC BY 4.0
Le Clain qui prend sa source dans la commune
Bourdaire-L · CC BY-SA 4.0

Where these numbers come from

Name, length, placesWikidata (Q498302) · 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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