HydroBASINS lev08 watershed · #7080178710
Bassin de Nechako River
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 : Bulkley-Nechako, Fraser-Fort George
Sub-basin area
705,9km²
Upstream area
43 049,6km²
Discharge
324,2m³/s
Mean elev.
768m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Stuart River444 km²
- Bassin de Nechako River43 km²
2 dept-equivalent regions (GADM L2)
- 650.4 km²91.7% of basin
- 58.6 km²8.3% of basin
2 intersecting protected areas
STUART RIVER PARK
IUCN IIA - Park
3.57 km² overlap
Ecological Reserve
1.31 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
777 distinct species · 22 844 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 Nechako River : 28 espèces reliées par 87 interactions GloBI sur 4 types (connectance 11.2%, filtre Serrano α=0.2). 12 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
564mm
Moisture idx (CMI)
-0,24
Runoff
357mm/an
PET
738mm
AET
473mm
Mean slope
3,4°
Water table
196cm
Forest
95%
Crops
3%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)