HydroBASINS lev08 watershed · #4080001100
Bassin de Большой Сизиман
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 : Ul'chskiy rayon, Vaninskiy rayon
Sub-basin area
307,2km²
Upstream area
307,2km²
Discharge
3,02m³/s
Mean elev.
353m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- Vaninskiy rayonKhabarovsk · Russia273.6 km²88.7% of basin
- Ul'chskiy rayonKhabarovsk · Russia34.6 km²11.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 distinct species · 3 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
-1,6°C
Annual rain
658mm
Moisture idx (CMI)
0,21
Runoff
300mm/an
PET
517mm
AET
443mm
Mean slope
13,1°
Water table
321cm
Forest
95%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)