HydroBASINS lev08 watershed · #7080325410
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 3 administrative regions : Charlevoix, Charlevoix-Est, Le Fjord-du-Saguenay
Sub-basin area
789,1km²
Upstream area
789,1km²
Discharge
17m³/s
Mean elev.
438m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 775.7 km²98.0% of basin
- 12.0 km²1.5% of basin
- 3.8 km²0.5% of basin
15 intersecting protected areas
Quebec's national park
22.05 km² overlap
Marine park
4.02 km² overlap
Marine Park
4.02 km² overlap
03351R053 Biological Refuge
IUCN IVBiological refuge
2.80 km² overlap
03351R044 Biological Refuge
IUCN IVBiological refuge
2.79 km² overlap
Quebec's national park
2.60 km² overlap
03351R046 Biological Refuge
IUCN IVBiological refuge
1.19 km² overlap
03351R043 Biological Refuge
IUCN IVBiological refuge
1.18 km² overlap
03351R045 Biological Refuge
IUCN IVBiological refuge
1.16 km² overlap
6 more protected areassorted by overlap area
Lac-Poulin Old-Growth Forest
IUCN IIIOld-growth forest
1.05 km² overlap
03351R047 Biological Refuge
IUCN IVBiological refuge
1.00 km² overlap
03351R056 Biological Refuge
IUCN IVBiological refuge
0.90 km² overlap
03351R058 Biological Refuge
IUCN IVBiological refuge
0.69 km² overlap
03351R059 Biological Refuge
IUCN IVBiological refuge
0.67 km² overlap
03351R057 Biological Refuge
IUCN IVBiological refuge
0.60 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
681 distinct species · 36 148 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 : 18 espèces reliées par 85 interactions GloBI sur 3 types (connectance 20.9%, 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°
1,4°C
Annual rain
1 079mm
Moisture idx (CMI)
0,38
Runoff
679mm/an
PET
667mm
AET
600mm
Mean slope
9,7°
Water table
252cm
Forest
99%
Crops
1%
Urban
0%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)