HydroBASINS lev08 watershed · #2080020910
Bassin de la Vie
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 : Loire-Atlantique, Vendée
Sub-basin area
491,1km²
Upstream area
491,3km²
Discharge
9,88m³/s
Mean elev.
42m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 492.4 km²100.0% of basin
- 0.0 km²0.0% of basin
32 communes (GADM L5)Available for FRA, RWA
- Le Poiré-sur-Vie67.94 km²95% commune
- Aizenay60.30 km²74% commune
- Saint-Christophe-du-Ligneron41.67 km²98% commune
- Commequiers41.11 km²100% commune
- Apremont29.96 km²100% commune
- Beaufou28.14 km²100% commune
- Coëx20.48 km²51% commune
- Saint-Étienne-du-Bois18.52 km²64% commune
- Maché17.89 km²100% commune
- Le Fenouiller17.80 km²99% commune
- Soullans17.64 km²42% commune
- Saint-Paul-Mont-Penit16.39 km²99% commune
- Notre-Dame-de-Riez14.40 km²99% commune
- La Chapelle-Palluau13.69 km²100% commune
- Belleville-sur-Vie13.19 km²85% commune
- Les Lucs-sur-Boulogne11.67 km²22% commune
- Saint-Hilaire-de-Riez10.64 km²22% commune
- Saint-Maixent-sur-Vie10.48 km²98% commune
- Challans9.67 km²15% commune
- La Génétouze8.53 km²62% commune
- Palluau7.60 km²100% commune
- Grand'Landes7.28 km²36% commune
- Saint-Gilles-Croix-de-Vie3.67 km²36% commune
- Saint-Révérend1.20 km²8% commune
- Givrand1.11 km²9% commune
- Falleron0.67 km²2% commune
- La Chapelle-Hermier0.43 km²2% commune
- Saligny0.18 km²1% commune
- Froidfond0.08 km²0% commune
- Dompierre-sur-Yon0.06 km²0% commune
- Mouilleron-le-Captif0.02 km²0% commune
- Legé0.01 km²0% commune
3 intersecting protected areas
Wetland of International Importance (Ramsar Site)
16.58 km² overlap
Special Protection Area (Birds Directive)
16.58 km² overlap
Special Areas of Conservation (Habitats Directive)
16.57 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 856 distinct species · 51 580 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Vie : 38 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 6 bulles famille, 75 interactions GloBI documentées sur 5 types (connectance 7.9%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
11,9°C
Annual rain
821mm
Moisture idx (CMI)
0,02
Runoff
558mm/an
PET
802mm
AET
584mm
Mean slope
0,9°
Water table
79cm
Forest
0%
Crops
57%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)