HydroBASINS lev08 watershed · #8080000820
Bassin de Alaganik 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 : Valdez-Cordova
Sub-basin area
486,6km²
Upstream area
486,6km²
Discharge
36,88m³/s
Mean elev.
119m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 399.0 km²81.5% of basin
2 intersecting protected areas
Copper River Delta
IUCN VCritical Habitat Area
290.20 km² overlap
Copper Sands
IUCN IaResearch Natural Area
12.47 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
575 distinct species · 30 560 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Alaganik River : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 3 types (connectance 14.8%, filtre Serrano α=0.2). 13 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°
3,3°C
Annual rain
2 015mm
Moisture idx (CMI)
0,75
Runoff
2 463mm/an
PET
495mm
AET
495mm
Mean slope
6,9°
Water table
211cm
Forest
4%
Crops
0%
Urban
0%
Protected
92%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)