HydroBASINS lev08 watershed · #7080034620
Bassin de Rivière Ouelle
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 : Kamouraska, L'Islet
Sub-basin area
850,5km²
Upstream area
850,6km²
Discharge
16,78m³/s
Mean elev.
319m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 484.7 km²56.8% of basin
- 367.8 km²43.1% of basin
16 intersecting protected areas
White-tailed deer yard
84.06 km² overlap
01151R001 Biological Refuge
IUCN IVBiological refuge
1.43 km² overlap
Muskrat habitat
1.27 km² overlap
03551R022 Biological Refuge
IUCN IVBiological refuge
0.86 km² overlap
03551R024 Biological Refuge
IUCN IVBiological refuge
0.68 km² overlap
03551R020 Biological Refuge
IUCN IVBiological refuge
0.67 km² overlap
03551R023 Biological Refuge
IUCN IVBiological refuge
0.66 km² overlap
03551R027 Biological Refuge
IUCN IVBiological refuge
0.53 km² overlap
03551R026 Biological Refuge
IUCN IVBiological refuge
0.52 km² overlap
7 more protected areassorted by overlap area
03551R018 Biological Refuge
IUCN IVBiological refuge
0.48 km² overlap
Lac Noir Muskrat Habitat
IUCN VIMuskrat habitat
0.41 km² overlap
Rare forest ecosystem
0.25 km² overlap
Sector of Kamouraska Territorial reserve for protected area purposes
IUCN Not ReportedLand reserved for protected area
0.23 km² overlap
Water fowl gathering area
0.11 km² overlap
Muskrat habitat
0.07 km² overlap
03551R025 Biological Refuge
IUCN IVBiological refuge
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 282 distinct species · 64 705 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Ouelle : 24 espèces reliées par 74 interactions GloBI sur 4 types (connectance 12.4%, 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°
2,9°C
Annual rain
1 013mm
Moisture idx (CMI)
0,31
Runoff
644mm/an
PET
698mm
AET
606mm
Mean slope
2,1°
Water table
52cm
Forest
95%
Crops
5%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)