HydroBASINS lev08 watershed · #4080151910
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
99,4km²
Upstream area
34 442,4km²
Discharge
72,51m³/s
Mean elev.
1 011m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Онон203 km²
- Bassin de Онон46 km²
3 dept-equivalent regions (GADM L2)
- 74.7 km²74.9% of basin
- 18.6 km²18.7% of basin
- 6.4 km²6.4% of basin
2 intersecting protected areas
Onon-Balj /B/
IUCN IINational Park
68.45 km² overlap
Gornaya step`
IUCN IVState Natural Zakaznik
14.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
12 distinct species · 24 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°
-0,3°C
Annual rain
332mm
Moisture idx (CMI)
-0,57
Runoff
75mm/an
PET
765mm
AET
299mm
Mean slope
6,2°
Water table
163cm
Forest
17%
Crops
12%
Urban
0%
Protected
69%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)