HydroBASINS lev08 watershed · #4080144680
Bassin de Алькан
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 : Amurskiy rayon, Khabarovskiy rayon
Sub-basin area
2 469,7km²
Upstream area
2 469,7km²
Discharge
47,22m³/s
Mean elev.
265m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Amurskiy rayonKhabarovsk · Russia2401.3 km²96.9% of basin
- Khabarovskiy rayonKhabarovsk · Russia76.8 km²3.1% of basin
2 intersecting protected areas
Al`kan
IUCN IVState Natural Zakaznik
338.28 km² overlap
Lake Bolon & the mouths of the Selgon & Simmi Rivers
IUCN Not ReportedWetland of International Importance (Ramsar Site)
1.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
62 distinct species · 68 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 10 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 Алькан : 7 espèces reliées par 8 interactions GloBI sur 2 types (connectance 17.8%, filtre Serrano α=0.2). 3 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°
-0,9°C
Annual rain
696mm
Moisture idx (CMI)
0,02
Runoff
612mm/an
PET
680mm
AET
559mm
Mean slope
7,1°
Water table
129cm
Forest
61%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)