HydroBASINS lev08 watershed · #8080019670
Bassin de Beartrack 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 : Aleutians East
Sub-basin area
725,6km²
Upstream area
725,6km²
Discharge
13,26m³/s
Mean elev.
354m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 708.2 km²97.2% of basin
3 intersecting protected areas
Alaska Maritime
IUCN IVNational Wildlife Refuge
667.43 km² overlap
Marine Protected Area
667.15 km² overlap
Unimak Island
IUCN IbWilderness Area
627.47 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
117 distinct species · 402 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 Beartrack Creek : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 110 interactions GloBI sur 4 types (connectance 14.8%, filtre Serrano α=0.2). 8 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°
2,7°C
Annual rain
961mm
Moisture idx (CMI)
0,62
Runoff
1 142mm/an
PET
367mm
AET
361mm
Mean slope
6,6°
Water table
192cm
Forest
0%
Crops
0%
Urban
0%
Protected
98%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)