HydroBASINS lev08 watershed · #7080399970
Bassin de Rivière Richelieu
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 : La Vallée-du-Richelieu, Rouville
Sub-basin area
1,8km²
Upstream area
22 271km²
Discharge
428,86m³/s
Mean elev.
5m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rivière Richelieu586 km²
- Bassin de Rivière des Hurons355 km²
2 dept-equivalent regions (GADM L2)
- 1.1 km²59.5% of basin
- 0.7 km²40.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 369 distinct species · 246 826 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 Rivière Richelieu : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 4 types (connectance 14.3%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
6,3°C
Annual rain
965mm
Moisture idx (CMI)
0,12
Runoff
601mm/an
PET
849mm
AET
658mm
Mean slope
0,4°
Water table
0cm
Forest
0%
Crops
36%
Urban
65%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)