HydroBASINS lev08 watershed · #8080004710
Bassin de Nichlson Creek
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 : Bethel
Sub-basin area
601km²
Upstream area
601km²
Discharge
5,08m³/s
Mean elev.
79m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 572.3 km²94.7% of basin
1 intersecting protected areas
Togiak
IUCN IVNational Wildlife Refuge
582.62 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
294 distinct species · 1 085 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Nichlson Creek : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 5 types (connectance 9.8%, filtre Serrano α=0.2). 16 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°
0,3°C
Annual rain
930mm
Moisture idx (CMI)
0,54
Runoff
834mm/an
PET
422mm
AET
395mm
Mean slope
4,8°
Water table
239cm
Forest
0%
Crops
0%
Urban
0%
Protected
99%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)