HydroBASINS lev08 watershed · #8080237740
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
591,5km²
Upstream area
3 429km²
Discharge
56,35m³/s
Mean elev.
1 307m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- Fort Smith591.7 km²99.4% of basin
- 3.4 km²0.6% of basin
1 intersecting protected areas
National Park
331.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
39 distinct species · 95 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 : 18 espèces reliées par 18 interactions GloBI sur 2 types (connectance 9.5%, filtre Serrano α=0.2). 2 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°
-7,1°C
Annual rain
531mm
Moisture idx (CMI)
0,17
Runoff
528mm/an
PET
442mm
AET
352mm
Mean slope
17,4°
Water table
406cm
Forest
2%
Crops
0%
Urban
0%
Protected
56%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)