HydroBASINS lev08 watershed · #8080236850
Bassin de West Fork Gulkana 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 : Matanuska-Susitna, Valdez-Cordova
Sub-basin area
2 915,2km²
Upstream area
2 915,2km²
Discharge
39,39m³/s
Mean elev.
772m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 2290.8 km²78.1% of basin
- 642.3 km²21.9% of basin
1 intersecting protected areas
Gulkana River
IUCN VDesignated - Wild
250.82 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
118 distinct species · 472 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 West Fork Gulkana River : 33 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 60 interactions GloBI sur 5 types (connectance 7.0%, filtre Serrano α=0.2). 9 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°
-4,7°C
Annual rain
277mm
Moisture idx (CMI)
-0,47
Runoff
445mm/an
PET
527mm
AET
257mm
Mean slope
4,3°
Water table
86cm
Forest
15%
Crops
0%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)