HydroBASINS lev08 watershed · #4080099390
Bassin de Амгунь
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, im. Poliny Osipenko rayon
Sub-basin area
131,7km²
Upstream area
49 129,8km²
Discharge
422,25m³/s
Mean elev.
140m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Сомня2454 km²
- Bassin de Амгунь16 km²
2 dept-equivalent regions (GADM L2)
- im. Poliny Osipenko rayonKhabarovsk · Russia120.9 km²91.5% of basin
- Ul'chskiy rayonKhabarovsk · Russia11.3 km²8.5% of basin
1 intersecting protected areas
Reka Somnya
IUCN IIINatural Monument
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 distinct species · 6 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°
-2,0°C
Annual rain
580mm
Moisture idx (CMI)
0,02
Runoff
251mm/an
PET
567mm
AET
439mm
Mean slope
6,8°
Water table
146cm
Forest
62%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)