HydroBASINS lev08 watershed · #4080150890
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 3 administrative regions across 2 countries : Bayan-Uul, Dadal, Kyrinskiy rayon
Sub-basin area
147,3km²
Upstream area
34 797,7km²
Discharge
72,07m³/s
Mean elev.
939m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #4080152020208 km²
- Bassin de Онон99 km²
3 dept-equivalent regions (GADM L2)
- 125.5 km²84.9% of basin
- 13.6 km²9.2% of basin
- 8.7 km²5.9% of basin
2 intersecting protected areas
Onon-Balj /B/
IUCN IINational Park
104.23 km² overlap
Gornaya step`
IUCN IVState Natural Zakaznik
20.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 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°
0,0°C
Annual rain
316mm
Moisture idx (CMI)
-0,59
Runoff
70mm/an
PET
777mm
AET
285mm
Mean slope
3,2°
Water table
73cm
Forest
20%
Crops
13%
Urban
0%
Protected
70%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)