HydroBASINS lev08 watershed · #2080498750
Bassin du Layon
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Deux-Sèvres, Maine-et-Loire
Sub-basin area
1 081,6km²
Upstream area
1 081,6km²
Discharge
8,9m³/s
Mean elev.
91m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1009.7 km²93.1% of basin
- 74.9 km²6.9% of basin
72 communes (GADM L5)Available for FRA, RWA
- Vihiers60.99 km²100% commune
- Valanjou56.39 km²100% commune
- Nueil-sur-Layon50.51 km²93% commune
- Chemillé49.48 km²99% commune
- Coron31.83 km²100% commune
- Chanzeaux31.14 km²100% commune
- La Jumellière29.31 km²100% commune
- Les Verchers-sur-Layon28.28 km²92% commune
- Genneton27.86 km²100% commune
- Martigné-Briand27.76 km²100% commune
- Doué-la-Fontaine26.73 km²74% commune
- Montilliers26.36 km²100% commune
- Saint-Paul-du-Bois24.78 km²92% commune
- Saint-Maurice-la-Fougereuse23.60 km²65% commune
- Saint-Georges-sur-Layon23.39 km²100% commune
- Louresse-Rochemenier23.18 km²91% commune
- Melay22.55 km²99% commune
- Les Cerqueux-sous-Passavant22.53 km²100% commune
- Cléré-sur-Layon21.67 km²100% commune
- Saint-Georges-des-Gardes19.89 km²72% commune
- Champ-sur-Layon19.44 km²100% commune
- Thouarcé19.07 km²100% commune
- Dénezé-sous-Doué18.69 km²79% commune
- Concourson-sur-Layon18.53 km²100% commune
- Faveraye-Mâchelles18.48 km²100% commune
- Neuvy-en-Mauges18.16 km²100% commune
- Saint-Laurent-de-la-Plaine17.47 km²91% commune
- La Salle-de-Vihiers17.39 km²100% commune
- Tigné16.94 km²100% commune
- Chalonnes-sur-Loire16.94 km²44% commune
- Faye-d'Anjou16.38 km²53% commune
- Ambillou-Château15.10 km²74% commune
- Saint-Lambert-du-Lattay14.58 km²100% commune
- Chaudefonds-sur-Layon14.57 km²97% commune
- Cersay14.47 km²39% commune
- Saint-Aubin-de-Luigné13.65 km²89% commune
- Cossé-d'Anjou13.31 km²100% commune
- Saint-Lézin13.12 km²98% commune
- Brigné13.05 km²91% commune
- Chavagnes10.09 km²62% commune
- Chanteloup-les-Bois9.50 km²34% commune
- La Tourlandry9.41 km²48% commune
- Saint-Quentin-en-Mauges9.26 km²44% commune
- Sainte-Christine9.15 km²98% commune
- Beaulieu-sur-Layon8.90 km²69% commune
- Cernusson8.52 km²100% commune
- Trémont8.07 km²100% commune
- Rablay-sur-Layon7.54 km²100% commune
- Bourgneuf-en-Mauges6.78 km²58% commune
- Forges5.96 km²65% commune
- La Fosse-de-Tigné5.33 km²100% commune
- La Plaine5.23 km²24% commune
- Le Breuil-sous-Argenton5.22 km²27% commune
- Aubigné-sur-Layon5.19 km²100% commune
- Passavant-sur-Layon4.67 km²100% commune
- Meigné4.57 km²33% commune
- Tancoigné4.45 km²100% commune
- Ulcot3.72 km²56% commune
- Vezins3.10 km²17% commune
- Rochefort-sur-Loire2.66 km²9% commune
- Vaudelnay2.30 km²9% commune
- Le Pin-en-Mauges1.81 km²11% commune
- Saint-Macaire-du-Bois1.33 km²10% commune
- La Chapelle-Rousselin1.11 km²9% commune
- La Poitevinière0.76 km²3% commune
- Somloire0.62 km²2% commune
- Notre-Dame-d'Allençon0.57 km²4% commune
- Luigné0.48 km²5% commune
- Jallais0.37 km²1% commune
- Trémentines0.20 km²1% commune
- La Pommeraye0.09 km²0% commune
- Bouillé-Loretz0.00 km²0% commune
15 intersecting protected areas
Loire-Anjou-Touraine
IUCN VRegional Nature Park
180.48 km² overlap
Vallée de la Loire de Nantes aux Ponts-de-Cé et ses annexes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.87 km² overlap
Vallée de la Loire de Nantes aux Ponts-de-Cé et ses annexes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.25 km² overlap
etang de beaurepaire
IUCN IVLand acquired by a regional conservatory of natural areas
0.68 km² overlap
Coteaux Du Pont-Barré
IUCN IVRegional Nature Reserve
0.28 km² overlap
Le sillon houiller de basse Loire
IUCN Not ReportedGeotope Protection Order
0.09 km² overlap
Geotope Protection Order
0.09 km² overlap
Coupe géologique des Fresnaies
IUCN Not ReportedGeotope Protection Order
0.03 km² overlap
Geotope Protection Order
0.03 km² overlap
6 more protected areassorted by overlap area
Land acquired by a regional conservatory of natural areas
0.03 km² overlap
La mine et le chevalement des Malécots
IUCN Not ReportedGeotope Protection Order
0.00 km² overlap
Geotope Protection Order
0.00 km² overlap
Geotope Protection Order
0.00 km² overlap
Troncs d\'arbres fossilisés de la tranchée des Malécots
IUCN Not ReportedGeotope Protection Order
0.00 km² overlap
Biotope Protection Order
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 330 distinct species · 293 146 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydroclimate (BasinATLAS lev08)
Mean T°
11,4°C
Annual rain
698mm
Moisture idx (CMI)
-0,18
Runoff
260mm/an
PET
857mm
AET
571mm
Mean slope
1,4°
Water table
143cm
Forest
0%
Crops
60%
Urban
2%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)