HydroBASINS lev08 watershed · #3080478690
Bassin de Уолчан
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 : Aldanskiy rayon, Ayano-Mayskiy rayon
Sub-basin area
252,1km²
Upstream area
252,1km²
Discharge
2,23m³/s
Mean elev.
825m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 190.6 km²75.2% of basin
- Ayano-Mayskiy rayonKhabarovsk · Russia62.8 km²24.8% of basin
1 intersecting protected areas
Dzhanda
IUCN VIResource Reserve
237.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 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°
-11,4°C
Annual rain
464mm
Moisture idx (CMI)
-0,08
Runoff
263mm/an
PET
504mm
AET
387mm
Mean slope
6,7°
Water table
187cm
Forest
73%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)