HydroBASINS lev08 watershed · #8080002450
Bassin de South Fork Big 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 : Kenai Peninsula
Sub-basin area
358,1km²
Upstream area
358,1km²
Discharge
2,61m³/s
Mean elev.
239m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 353.9 km²98.3% of basin
3 intersecting protected areas
Redoubt Bay
IUCN VCritical Habitat Area
181.64 km² overlap
Lake Clark
IUCN VNational Preserve
46.36 km² overlap
Jay S. Hammond
IUCN IbWilderness Area
46.35 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
58 distinct species · 202 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 South Fork Big River : 19 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 2 types (connectance 11.0%, filtre Serrano α=0.2). 6 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°
1,3°C
Annual rain
774mm
Moisture idx (CMI)
0,36
Runoff
1 343mm/an
PET
494mm
AET
398mm
Mean slope
7,8°
Water table
277cm
Forest
15%
Crops
0%
Urban
0%
Protected
63%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)