HydroBASINS lev08 watershed · #2080379680
Bassin de 7e Petroleumhaven
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 7 administrative regions : Brielle, Maassluis, Midden-Delfland, Nissewaard, Rotterdam +2
Sub-basin area
101,4km²
Upstream area
162 653,3km²
Discharge
2 446,25m³/s
Mean elev.
0m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Waal1423 km²
- Bassin de Rotte269 km²
7 dept-equivalent regions (GADM L2)
- 40.9 km²40.1% of basin
- 14.4 km²14.1% of basin
- 13.7 km²13.5% of basin
- 11.8 km²11.6% of basin
- 10.3 km²10.1% of basin
- 6.0 km²5.9% of basin
- 4.8 km²4.7% of basin
1 intersecting protected areas
NNN-ZH
IUCN Not AssignedNature Reserves owned by professional nature management organizations
3.26 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 285 distinct species · 481 813 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 7e Petroleumhaven : 39 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) + 4 bulles famille, 81 interactions GloBI documentées sur 4 types (connectance 9.0%, filtre Serrano α=0.2). Les 4 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°
9,7°C
Annual rain
771mm
Moisture idx (CMI)
0,19
Runoff
482mm/an
PET
628mm
AET
511mm
Mean slope
0,3°
Water table
8cm
Forest
2%
Crops
27%
Urban
95%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)