HydroBASINS lev08 watershed · #7080142760
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
622,7km²
Upstream area
622,7km²
Discharge
11,89m³/s
Mean elev.
500m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 625.6 km²100.0% of basin
1 intersecting protected areas
Quebec's national park reserve
202.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydroclimate (BasinATLAS lev08)
Mean T°
-5,4°C
Annual rain
719mm
Moisture idx (CMI)
0,42
Runoff
603mm/an
PET
420mm
AET
378mm
Mean slope
2,9°
Water table
52cm
Forest
38%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)