HydroBASINS lev08 watershed · #7080325830
Bassin de Rivière Saint-Jean
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 1 administrative regions : Le Fjord-du-Saguenay
Sub-basin area
50,5km²
Upstream area
84 387,6km²
Discharge
1 821,67m³/s
Mean elev.
163m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rivière Saint-Jean789 km²
- Bassin de Rivière Éternité774 km²
1 dept-equivalent regions (GADM L2)
- 50.6 km²100.0% of basin
4 intersecting protected areas
Marine park
18.21 km² overlap
Marine Park
18.21 km² overlap
Quebec's national park
17.81 km² overlap
Biodiversity reserve
5.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
188 distinct species · 361 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 Saint-Jean : 30 espèces reliées par 66 interactions GloBI sur 3 types (connectance 8.5%, 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°
2,5°C
Annual rain
988mm
Moisture idx (CMI)
0,30
Runoff
688mm/an
PET
694mm
AET
596mm
Mean slope
8,4°
Water table
278cm
Forest
60%
Crops
0%
Urban
0%
Protected
71%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)