HydroBASINS lev08 watershed · #2080022140
Bassin de Canal Saint-Aubin
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 : Eure, Seine-Maritime
Sub-basin area
73,9km²
Upstream area
73,9km²
Discharge
1,42m³/s
Mean elev.
23m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 73.9 km²99.7% of basin
- 0.2 km²0.3% of basin
13 communes (GADM L5)Available for FRA, RWA
- Marais-Vernier25.74 km²99% commune
- Saint-Aubin-sur-Quillebeuf9.87 km²81% commune
- Sainte-Opportune-la-Mare9.86 km²90% commune
- Quillebeuf-sur-Seine8.61 km²86% commune
- Bouquelon7.39 km²62% commune
- Saint-Samson-de-la-Roque6.03 km²33% commune
- Saint-Ouen-des-Champs3.47 km²55% commune
- Saint-Thurien1.84 km²34% commune
- Trouville-la-Haule1.08 km²9% commune
- La Cerlangue0.16 km²1% commune
- Tancarville0.05 km²1% commune
- Saint-Jean-de-Folleville0.01 km²0% commune
- Lillebonne0.01 km²0% commune
13 intersecting protected areas
Regional Nature Park
74.12 km² overlap
Marais Vernier et Vallée de la Risle maritime
IUCN Not ReportedWetland of International Importance (Ramsar Site)
63.23 km² overlap
Marais Vernier, Risle Maritime
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
60.25 km² overlap
Estuaire et marais de la Basse Seine
IUCN Not ReportedSpecial Protection Area (Birds Directive)
44.96 km² overlap
Marais vernier
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
6.49 km² overlap
Estuaire de la Seine
IUCN Not ReportedMarine Protected Area (OSPAR)
4.06 km² overlap
Estuaire de la Seine
IUCN Not ReportedMarine Protected Area (OSPAR)
2.42 km² overlap
Estuaire De La Seine
IUCN IVNational Nature Reserve
2.41 km² overlap
Estuaire de la Seine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.82 km² overlap
4 more protected areassorted by overlap area
Marais Vernier
IUCN IVNational Nature Reserve
1.48 km² overlap
Risle maritime
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.44 km² overlap
Biotope Protection Order
0.16 km² overlap
les courtils
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 216 distinct species · 47 647 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 Bassin de Canal Saint-Aubin : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 14 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°
10,7°C
Annual rain
678mm
Moisture idx (CMI)
-0,13
Runoff
607mm/an
PET
781mm
AET
540mm
Mean slope
1,5°
Water table
117cm
Forest
7%
Crops
35%
Urban
1%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)