HydroBASINS lev08 watershed · #8080234670
Bassin de South Nahanni 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 : Fort Smith, Yukon
Sub-basin area
628,6km²
Upstream area
2 107,9km²
Discharge
33,07m³/s
Mean elev.
1 334m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de South Nahanni River872 km²
- Bassin · #8080232040607 km²
2 dept-equivalent regions (GADM L2)
- Fort Smith457.2 km²72.3% of basin
- 175.3 km²27.7% of basin
1 intersecting protected areas
National Park
260.49 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
125 distinct species · 155 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 South Nahanni River : 27 espèces reliées par 39 interactions GloBI sur 5 types (connectance 7.9%, filtre Serrano α=0.2). 5 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°
-7,4°C
Annual rain
505mm
Moisture idx (CMI)
0,12
Runoff
501mm/an
PET
442mm
AET
348mm
Mean slope
13,5°
Water table
285cm
Forest
2%
Crops
0%
Urban
0%
Protected
41%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)