HydroBASINS lev08 watershed · #8080000970
Bassin de West Fork Olsen Bay 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 : Valdez-Cordova
Sub-basin area
1 188,9km²
Upstream area
1 188,9km²
Discharge
24,7m³/s
Mean elev.
389m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 1065.1 km²89.1% of basin
6 intersecting protected areas
Evos
IUCN VConservation Easement
82.47 km² overlap
Tatitlek Timber
IUCN VConservation Easement
57.39 km² overlap
Olsen Bay Creek
IUCN IaResearch Natural Area
27.62 km² overlap
Jack Bay
IUCN VConservation Easement
3.87 km² overlap
Jack Bay
IUCN VState Marine Park
3.29 km² overlap
Evos Exclusion Area
IUCN VConservation Easement
1.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
399 distinct species · 1 904 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 West Fork Olsen Bay Creek : 41 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 3 types (connectance 5.2%, 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°
1,0°C
Annual rain
1 312mm
Moisture idx (CMI)
0,64
Runoff
2 327mm/an
PET
462mm
AET
435mm
Mean slope
20,7°
Water table
598cm
Forest
20%
Crops
0%
Urban
0%
Protected
47%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)