HydroBASINS lev08 watershed · #8080008880
Bassin de Niguanak 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 1 administrative regions : North Slope
Sub-basin area
484,8km²
Upstream area
484,8km²
Discharge
0,19m³/s
Mean elev.
104m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 478.5 km²98.0% of basin
2 intersecting protected areas
Marine Protected Area
488.24 km² overlap
Arctic
IUCN IVNational Wildlife Refuge
396.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
58 distinct species · 310 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 Niguanak River : 20 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 41 interactions GloBI sur 2 types (connectance 13.7%, 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°
-12,2°C
Annual rain
138mm
Moisture idx (CMI)
-0,36
Runoff
89mm/an
PET
216mm
AET
146mm
Mean slope
4,8°
Water table
68cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)