HydroBASINS lev08 watershed · #7080287120
Bassin de Rivière Toulnustouc
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 : Manicouagan, Sept-Rivières--Caniapiscau
Sub-basin area
1 780,3km²
Upstream area
9 161,3km²
Discharge
158,89m³/s
Mean elev.
426m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rivière Toulnustouc1603 km²
- Bassin de Rivière Fontmarais561 km²
2 dept-equivalent regions (GADM L2)
- 1745.5 km²97.7% of basin
- 40.9 km²2.3% of basin
13 intersecting protected areas
Proposed biodiversity reserve
83.67 km² overlap
Proposed ecological reserve
53.07 km² overlap
Lac-Leblanc Old-Growth Forest
IUCN IIIOld-growth forest
13.85 km² overlap
09351R091 Biological Refuge
IUCN IVBiological refuge
5.34 km² overlap
09351R090 Biological Refuge
IUCN IVBiological refuge
5.15 km² overlap
09351R026 Biological Refuge
IUCN IVBiological refuge
4.89 km² overlap
Lac-Béluga Old-Growth Forest
IUCN IIIOld-growth forest
4.13 km² overlap
09351R110 Biological Refuge
IUCN IVBiological refuge
2.11 km² overlap
09451R021 Biological Refuge
IUCN IVBiological refuge
1.90 km² overlap
4 more protected areassorted by overlap area
Land set aside Vallée-de-la-Rivière-Godbout
IUCN Not ReportedLand set aside
1.84 km² overlap
09451R029 Biological Refuge
IUCN IVBiological refuge
1.74 km² overlap
09451R024 Biological Refuge
IUCN IVBiological refuge
1.13 km² overlap
09351R027 Biological Refuge
IUCN IVBiological refuge
0.83 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
147 distinct species · 444 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Toulnustouc : 32 espèces reliées par 72 interactions GloBI sur 3 types (connectance 9.7%, filtre Serrano α=0.2). 7 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°
-0,9°C
Annual rain
1 046mm
Moisture idx (CMI)
0,43
Runoff
606mm/an
PET
597mm
AET
541mm
Mean slope
7,5°
Water table
171cm
Forest
96%
Crops
0%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)