HydroBASINS lev08 watershed · #2080523170
Bassin de la Vendée
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 3 administrative regions : Charente-Maritime, Deux-Sèvres, Vendée
Sub-basin area
594,8km²
Upstream area
594,8km²
Discharge
9,54m³/s
Mean elev.
85m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 504.9 km²84.7% of basin
- 85.4 km²14.3% of basin
- 6.0 km²1.0% of basin
59 communes (GADM L5)Available for FRA, RWA
- Foussais-Payré34.62 km²100% commune
- Fontenay-le-Comte32.45 km²94% commune
- Le Busseau28.48 km²100% commune
- Mervent22.81 km²100% commune
- Antigny22.12 km²99% commune
- Saint-Maurice-des-Noues21.38 km²100% commune
- Vouvant20.65 km²100% commune
- Saint-Hilaire-de-Voust18.79 km²100% commune
- Sérigné17.89 km²100% commune
- Saint-Michel-le-Cloucq17.66 km²100% commune
- Le Poiré-sur-Velluire17.49 km²100% commune
- Bourneau16.12 km²99% commune
- Saint-Paul-en-Gâtine15.84 km²99% commune
- Breuil-Barret14.77 km²100% commune
- Puy-de-Serre13.92 km²100% commune
- Auzay13.49 km²100% commune
- Saint-Sulpice-en-Pareds12.98 km²98% commune
- Cezais12.55 km²100% commune
- Marsais-Sainte-Radégonde12.15 km²81% commune
- Pissotte12.05 km²100% commune
- Longèves11.87 km²100% commune
- Saint-Maixent-de-Beugné11.20 km²100% commune
- Faymoreau10.85 km²100% commune
- L'Hermenault10.74 km²95% commune
- Loge-Fougereuse10.52 km²100% commune
- La Chapelle-aux-Lys10.01 km²100% commune
- La Chapelle-Thireuil9.49 km²55% commune
- L'Orbrie9.35 km²100% commune
- Saint-Hilaire-des-Loges8.98 km²26% commune
- Saint-Pierre-du-Chemin8.90 km²29% commune
- La Tardière8.68 km²42% commune
- Saint-Laurs8.42 km²98% commune
- Petosse8.38 km²51% commune
- La Taillée8.32 km²72% commune
- Thouarsais-Bouildroux7.41 km²42% commune
- La Châtaigneraie6.85 km²88% commune
- Scillé6.70 km²59% commune
- Velluire6.59 km²68% commune
- Marans6.03 km²7% commune
- Le Langon5.14 km²22% commune
- Chaix5.12 km²67% commune
- Saint-Maurice-le-Girard4.70 km²42% commune
- Le Gué-de-Velluire4.64 km²36% commune
- L'Île-d'Elle4.48 km²24% commune
- Marillet3.98 km²100% commune
- Saint-Martin-des-Fontaines3.83 km²71% commune
- Xanton-Chassenon3.77 km²19% commune
- Saint-Cyr-des-Gâts3.07 km²15% commune
- Coulonges-sur-l'Autize2.94 km²16% commune
- Saint-Valérien2.63 km²17% commune
- Saint-Martin-de-Fraigneau1.79 km²14% commune
- L'Absie0.84 km²6% commune
- Moutiers-sous-Chantemerle0.64 km²3% commune
- La Chapelle-Saint-Étienne0.47 km²2% commune
- Ardin0.42 km²1% commune
- Pouillé0.29 km²2% commune
- Vouillé-les-Marais0.08 km²1% commune
- Fontaines0.04 km²0% commune
- Bazoges-en-Pareds0.00 km²0% commune
11 intersecting protected areas
Marais Poitevin
IUCN VRegional Nature Park
103.91 km² overlap
Marais poitevin
IUCN IIIWetland of International Importance (Ramsar Site)
19.43 km² overlap
Marais poitevin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
19.15 km² overlap
Marais Poitevin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.88 km² overlap
Plaine calcaire du sud Vendée
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.00 km² overlap
Forêt de Mervent-Vouvant et ses abords
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.96 km² overlap
Regional Nature Reserve
2.44 km² overlap
Marais Poitevin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.27 km² overlap
Cavités à chiroptères de Saint-Michel-le-Cloucq et Pissotte
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.07 km² overlap
2 more protected areassorted by overlap area
Biotope Protection Order
0.03 km² overlap
Biotope Protection Order
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 818 distinct species · 98 981 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de la Vendée : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 99 interactions GloBI sur 6 types (connectance 11.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
11,8°C
Annual rain
772mm
Moisture idx (CMI)
-0,08
Runoff
506mm/an
PET
839mm
AET
584mm
Mean slope
2,0°
Water table
127cm
Forest
5%
Crops
56%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)