HydroBASINS lev08 watershed · #7080309880
Bassin de Rivière Alex
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 : Lac-Saint-Jean-Est, Maria-Chapdelaine
Sub-basin area
1 069,3km²
Upstream area
1 069,3km²
Discharge
23,33m³/s
Mean elev.
342m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1041.3 km²97.1% of basin
- 31.4 km²2.9% of basin
10 intersecting protected areas
02451R007 Biological Refuge
IUCN IVBiological refuge
3.12 km² overlap
02451R010 Biological Refuge
IUCN IVBiological refuge
2.69 km² overlap
02451R018 Biological Refuge
IUCN IVBiological refuge
1.55 km² overlap
02451R012 Biological Refuge
IUCN IVBiological refuge
1.36 km² overlap
02451R008 Biological Refuge
IUCN IVBiological refuge
1.24 km² overlap
02451R005 Biological Refuge
IUCN IVBiological refuge
1.14 km² overlap
02451R016 Biological Refuge
IUCN IVBiological refuge
1.12 km² overlap
02451R004 Biological Refuge
IUCN IVBiological refuge
1.12 km² overlap
02451R019 Biological Refuge
IUCN IVBiological refuge
1.05 km² overlap
1 more protected areassorted by overlap area
02751R015 Biological Refuge
IUCN IVBiological refuge
0.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
175 distinct species · 1 736 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 Alex : 26 espèces reliées par 98 interactions GloBI sur 4 types (connectance 13.2%, 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°
0,8°C
Annual rain
955mm
Moisture idx (CMI)
0,30
Runoff
687mm/an
PET
666mm
AET
578mm
Mean slope
5,9°
Water table
125cm
Forest
88%
Crops
1%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)