HydroBASINS lev08 watershed · #8080236860
Bassin de Sourdough 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
295,3km²
Upstream area
1 888,6km²
Discharge
33,51m³/s
Mean elev.
730m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
1 dept-equivalent regions (GADM L2)
- 297.1 km²100.0% of basin
1 intersecting protected areas
Gulkana River
IUCN VDesignated - Wild
46.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
227 distinct species · 3 402 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 Sourdough Creek : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 94 interactions GloBI sur 6 types (connectance 8.3%, filtre Serrano α=0.2). 19 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°
-4,3°C
Annual rain
257mm
Moisture idx (CMI)
-0,53
Runoff
422mm/an
PET
542mm
AET
243mm
Mean slope
3,4°
Water table
67cm
Forest
15%
Crops
0%
Urban
0%
Protected
25%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)