HydroBASINS lev08 watershed · #7080133180
Bassin de Rivière Siwampy Bay
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 : Nord-du-Québec
Sub-basin area
1 906,4km²
Upstream area
5 000,8km²
Discharge
83,3m³/s
Mean elev.
451m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
1 dept-equivalent regions (GADM L2)
- 1915.3 km²100.0% of basin
2 intersecting protected areas
Quebec's national park reserve
146.49 km² overlap
Land reserved for protected area
33.31 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
209 distinct species · 367 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 17 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 Siwampy Bay : 16 espèces reliées par 11 interactions GloBI sur 3 types (connectance 8.1%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
-5,5°C
Annual rain
703mm
Moisture idx (CMI)
0,40
Runoff
484mm/an
PET
419mm
AET
375mm
Mean slope
2,6°
Water table
42cm
Forest
41%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)