HydroBASINS lev08 watershed · #2080022100
Bassin de la Morelle
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 : Calvados, Eure
Sub-basin area
111,3km²
Upstream area
111,4km²
Discharge
2,22m³/s
Mean elev.
99m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 74.3 km²66.5% of basin
- 37.4 km²33.5% of basin
20 communes (GADM L5)Available for FRA, RWA
- Beuzeville14.18 km²61% commune
- Ablon12.05 km²96% commune
- Quetteville10.33 km²100% commune
- Genneville9.33 km²100% commune
- Honfleur9.15 km²65% commune
- Fiquefleur-Équainville8.94 km²90% commune
- Gonneville-sur-Honfleur8.45 km²100% commune
- Manneville-la-Raoult7.43 km²98% commune
- Fourneville6.25 km²100% commune
- Saint-Gatien-des-Bois5.04 km²10% commune
- La Rivière-Saint-Sauveur4.95 km²94% commune
- Fatouville-Grestain3.39 km²30% commune
- Saint-Benoît-d'Hébertot2.97 km²41% commune
- Équemauville2.87 km²51% commune
- Le Theil-en-Auge2.87 km²100% commune
- La Lande-Saint-Léger2.24 km²30% commune
- Saint-Pierre-du-Val0.99 km²8% commune
- Le Torpt0.12 km²2% commune
- Martainville0.08 km²1% commune
- Saint-André-d'Hébertot0.00 km²0% commune
6 intersecting protected areas
Estuaire de la Seine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.94 km² overlap
Rives de seine sud - 14
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
2.41 km² overlap
Estuaire et marais de la Basse Seine
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.84 km² overlap
Rives de seine sud - 27
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1.57 km² overlap
Estuaire de la Seine
IUCN Not ReportedMarine Protected Area (OSPAR)
1.22 km² overlap
Regional Nature Park
1.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 780 distinct species · 36 448 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 la Morelle : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 98 interactions GloBI sur 6 types (connectance 16.5%, 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°
10,2°C
Annual rain
710mm
Moisture idx (CMI)
-0,07
Runoff
613mm/an
PET
767mm
AET
546mm
Mean slope
2,6°
Water table
157cm
Forest
3%
Crops
34%
Urban
10%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)