HydroBASINS lev08 watershed · #7080398780
Bassin de Ottawa River / Rivière des Outaouais
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 4 administrative regions : Argenteuil, Prescott and Russell, Stormont, Dundas and Glengarry, Vaudreuil-Soulanges
Sub-basin area
508,9km²
Upstream area
144 026,8km²
Discharge
1 863,9m³/s
Mean elev.
98m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
4 dept-equivalent regions (GADM L2)
- 258.4 km²50.7% of basin
- 216.6 km²42.5% of basin
- 24.1 km²4.7% of basin
- 11.0 km²2.2% of basin
16 intersecting protected areas
Provincial Park
14.46 km² overlap
Water fowl gathering area
4.92 km² overlap
Water fowl gathering area
1.73 km² overlap
Water fowl gathering area
1.55 km² overlap
Water fowl gathering area
1.06 km² overlap
Muskrat habitat
0.53 km² overlap
Natural Area Under Private Stewardship
0.50 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.29 km² overlap
Natural Area Under Private Stewardship
0.25 km² overlap
7 more protected areassorted by overlap area
Muskrat habitat
0.18 km² overlap
Muskrat habitat
0.17 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.12 km² overlap
Muskrat habitat
0.11 km² overlap
Habitat of a threatened or vulnerable plant species
0.09 km² overlap
Muskrat habitat
0.06 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 031 distinct species · 154 625 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Ottawa River / Rivière des Outaouais : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 4 types (connectance 17.2%, filtre Serrano α=0.2). 11 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°
5,6°C
Annual rain
946mm
Moisture idx (CMI)
0,14
Runoff
531mm/an
PET
811mm
AET
635mm
Mean slope
1,7°
Water table
75cm
Forest
70%
Crops
34%
Urban
3%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)