HydroBASINS lev08 watershed · #7080352290
Bassin de Rivière Saint-Maurice
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 : Le Haut-Saint-Maurice, Mékinac, Portneuf
Sub-basin area
830,6km²
Upstream area
31 765,4km²
Discharge
510,36m³/s
Mean elev.
325m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
3 dept-equivalent regions (GADM L2)
- 832.1 km²99.9% of basin
- 0.7 km²0.1% of basin
- 0.1 km²0.0% of basin
19 intersecting protected areas
Proposed biodiversity reserve
123.41 km² overlap
04251R086 Biological Refuge
IUCN IVBiological refuge
3.02 km² overlap
04251R202 Biological Refuge
IUCN IVBiological refuge
2.27 km² overlap
04251R019 Biological Refuge
IUCN IVBiological refuge
2.18 km² overlap
Proposed biodiversity reserve
2.07 km² overlap
04251R501 Biological Refuge
IUCN IVBiological refuge
1.82 km² overlap
04251R196 Biological Refuge
IUCN IVBiological refuge
1.32 km² overlap
04251R031 Biological Refuge
IUCN IVBiological refuge
1.24 km² overlap
04352R747 Biological Refuge
IUCN IVBiological refuge
1.15 km² overlap
10 more protected areassorted by overlap area
04352R991 Biological Refuge
IUCN IVBiological refuge
1.08 km² overlap
04251R513 Biological Refuge
IUCN IVBiological refuge
1.03 km² overlap
04251R056 Biological Refuge
IUCN IVBiological refuge
0.96 km² overlap
04251R511 Biological Refuge
IUCN IVBiological refuge
0.95 km² overlap
04352R989 Biological Refuge
IUCN IVBiological refuge
0.86 km² overlap
04352R526 Biological Refuge
IUCN IVBiological refuge
0.58 km² overlap
04352R942 Biological Refuge
IUCN IVBiological refuge
0.46 km² overlap
Île Steamboat Heronry
IUCN VIHeronry
0.29 km² overlap
Island or peninsula inhabited by a colony of birds
0.01 km² overlap
04251R174 Biological Refuge
IUCN IVBiological refuge
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
936 distinct species · 34 010 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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-Maurice : 14 espèces reliées par 68 interactions GloBI sur 4 types (connectance 19.4%, filtre Serrano α=0.2). 13 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 033mm
Moisture idx (CMI)
0,27
Runoff
537mm/an
PET
757mm
AET
633mm
Mean slope
5,7°
Water table
131cm
Forest
95%
Crops
0%
Urban
1%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)