Rivière· 14 segments
Le Lay
Crosses 1 administrative regions : Vendée
Total length
77km
Max discharge
34,3m³/s
Max Strahler
4
Segments matched
14
River geography1 admin regions · 27 communes
1 administrative regions crossed (GADM L2)
- VendéePays de la Loire · France66.9 kmin this dpt
27 communes (L5)For countries with L5
- Mareuil-sur-Lay-Dissais8.98 km
- Grues7.75 km
- La Bretonnière-la-Claye4.79 km
- La Couture4.68 km
- Lairoux4.57 km
- Bournezeau4.04 km
- Moutiers-sur-le-Lay3.94 km
- Sainte-Pexine3.73 km
- La Réorthe3.46 km
- Péault3.21 km
- L'Aiguillon-sur-Mer2.95 km
- Sainte-Hermine2.68 km
- Angles2.41 km
- Saint-Denis-du-Payré2.37 km
- Bessay2.33 km
- Rosnay1.83 km
- Saint-Benoist-sur-Mer1.12 km
- La Faute-sur-Mer0.98 km
- Chantonnay0.46 km
- Saint-Michel-en-l'Herm0.20 km
- Corpe0.17 km
- Le Champ-Saint-Père0.11 km
- Curzon0.11 km
- Saint-Vincent-sur-Graon0.00 km
- La Tranche-sur-Mer0.00 km
- Saint-Cyr-en-Talmondais0.00 km
- Château-Guibert0.00 km
8 intersecting protected areas
Marine Nature Park
Marais Poitevin
IUCN VRegional Nature Park
Marais poitevin
IUCN IIIWetland of International Importance (Ramsar Site)
Marais poitevin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Marais Poitevin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Pointe d\'arcay
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
Casse De La Belle Henriette
IUCN IVNational Nature Reserve
Pointe D\'Arçay
IUCN IVForest Managed Biological Reserve
1 page = 1 named river (aggregation of 14 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 167 distinct species · 19 114 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Le Lay : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 104 interactions GloBI sur 6 types (connectance 15.6%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
77km
Max discharge
34,3m³/s
Max Strahler
4
Segments matched
14
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.