HydroBASINS lev08 watershed · #4080144150
Bassin de Онон
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 across 2 countries : Bayandun, Kyrinskiy rayon
Sub-basin area
344,4km²
Upstream area
344,4km²
Discharge
0,53m³/s
Mean elev.
1 016m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 343.0 km²99.3% of basin
- 2.5 km²0.7% of basin
1 intersecting protected areas
Mangutskaya peshhera
IUCN IIINatural Monument
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 distinct species · 14 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°
-0,1°C
Annual rain
254mm
Moisture idx (CMI)
-0,68
Runoff
49mm/an
PET
786mm
AET
236mm
Mean slope
7,3°
Water table
187cm
Forest
22%
Crops
9%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)