HydroBASINS lev08 watershed · #7080352410
Bassin de Rivière Wessonneau
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 : Le Haut-Saint-Maurice, Mékinac
Sub-basin area
807,1km²
Upstream area
807,4km²
Discharge
12,32m³/s
Mean elev.
384m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 454.1 km²56.1% of basin
- 355.2 km²43.9% of basin
15 intersecting protected areas
Proposed biodiversity reserve
38.56 km² overlap
Land reserved for protected area
5.04 km² overlap
04151R052 Biological Refuge
IUCN IVBiological refuge
2.65 km² overlap
04151R998 Biological Refuge
IUCN IVBiological refuge
2.08 km² overlap
04151R904 Biological Refuge
IUCN IVBiological refuge
1.27 km² overlap
04151R053 Biological Refuge
IUCN IVBiological refuge
1.02 km² overlap
04151R055 Biological Refuge
IUCN IVBiological refuge
0.82 km² overlap
04151R912 Biological Refuge
IUCN IVBiological refuge
0.72 km² overlap
04151R103 Biological Refuge
IUCN IVBiological refuge
0.65 km² overlap
6 more protected areassorted by overlap area
04151R910 Biological Refuge
IUCN IVBiological refuge
0.64 km² overlap
04151R911 Biological Refuge
IUCN IVBiological refuge
0.64 km² overlap
04151R048 Biological Refuge
IUCN IVBiological refuge
0.63 km² overlap
04151R905 Biological Refuge
IUCN IVBiological refuge
0.59 km² overlap
04151R012 Biological Refuge
IUCN IVBiological refuge
0.55 km² overlap
04151R907 Biological Refuge
IUCN IVBiological refuge
0.34 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
296 distinct species · 3 342 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Wessonneau : 24 espèces reliées par 81 interactions GloBI sur 4 types (connectance 12.9%, filtre Serrano α=0.2). 12 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°
2,5°C
Annual rain
1 054mm
Moisture idx (CMI)
0,29
Runoff
483mm/an
PET
750mm
AET
632mm
Mean slope
5,5°
Water table
128cm
Forest
91%
Crops
0%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)