HydroBASINS lev08 watershed · #4080099950
Bassin de Марамра
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
253,6km²
Upstream area
1 933 853,9km²
Discharge
10 341,02m³/s
Mean elev.
21m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Урпли710 km²
- Bassin de Амур230 km²
2 dept-equivalent regions (GADM L2)
- Ul'chskiy rayonKhabarovsk · Russia197.9 km²77.7% of basin
- im. Poliny Osipenko rayonKhabarovsk · Russia56.7 km²22.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
8 distinct species · 8 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°
-1,2°C
Annual rain
590mm
Moisture idx (CMI)
0,03
Runoff
300mm/an
PET
573mm
AET
438mm
Mean slope
1,5°
Water table
31cm
Forest
8%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)