HydroBASINS lev08 watershed · #2080022160
Bassin de la Brouisseresse
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 : Calvados, Eure, Seine-Maritime
Sub-basin area
101,6km²
Upstream area
101,6km²
Discharge
1,72m³/s
Mean elev.
50m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 98.0 km²96.2% of basin
- 1.4 km²1.4% of basin
- 0.0 km²0.0% of basin
23 communes (GADM L5)Available for FRA, RWA
- La Cerlangue28.01 km²95% commune
- Saint-Vigor-d'Ymonville20.42 km²54% commune
- Saint-Jean-de-Folleville11.03 km²82% commune
- Saint-Nicolas-de-la-Taille9.12 km²100% commune
- Tancarville7.50 km²98% commune
- La Remuée4.89 km²71% commune
- Mélamare4.31 km²63% commune
- Le Havre2.99 km²6% commune
- Gonfreville-l'Orcher2.67 km²10% commune
- Les Trois-Pierres2.38 km²33% commune
- Saint-Antoine-la-Forêt1.85 km²29% commune
- Rogerville0.84 km²8% commune
- Oudalle0.79 km²7% commune
- Sandouville0.74 km²4% commune
- Saint-Samson-de-la-Roque0.55 km²3% commune
- Berville-sur-Mer0.48 km²8% commune
- Lillebonne0.47 km²3% commune
- Marais-Vernier0.23 km²1% commune
- Fatouville-Grestain0.14 km²1% commune
- Fiquefleur-Équainville0.01 km²0% commune
- Ablon0.01 km²0% commune
- Quillebeuf-sur-Seine0.00 km²0% commune
- Saint-Eustache-la-Forêt0.00 km²0% commune
10 intersecting protected areas
Regional Nature Park
62.39 km² overlap
Estuaire de la Seine
IUCN Not ReportedMarine Protected Area (OSPAR)
33.28 km² overlap
Estuaire et marais de la Basse Seine
IUCN Not ReportedSpecial Protection Area (Birds Directive)
31.12 km² overlap
Estuaire De La Seine
IUCN IVNational Nature Reserve
28.25 km² overlap
Estuaire de la Seine
IUCN Not ReportedMarine Protected Area (OSPAR)
28.16 km² overlap
Estuaire de la Seine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
25.99 km² overlap
Estuaire de la seine
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
8.38 km² overlap
Marais Vernier et Vallée de la Risle maritime
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.56 km² overlap
Biotope Protection Order
0.13 km² overlap
1 more protected areassorted by overlap area
Val Eglantier
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 247 distinct species · 28 913 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Brouisseresse : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 134 interactions GloBI sur 6 types (connectance 14.2%, filtre Serrano α=0.2). 15 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°
10,5°C
Annual rain
695mm
Moisture idx (CMI)
-0,10
Runoff
618mm/an
PET
771mm
AET
542mm
Mean slope
1,9°
Water table
132cm
Forest
1%
Crops
41%
Urban
6%
Protected
69%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)