HydroBASINS lev08 watershed · #4080164280
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 : Bayan-Adarga, Binder, Dadal
Sub-basin area
311,6km²
Upstream area
311,7km²
Discharge
0,85m³/s
Mean elev.
1 139m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 161.4 km²51.6% of basin
- 140.9 km²45.1% of basin
- 10.3 km²3.3% of basin
1 intersecting protected areas
Onon-Balj /A/
IUCN IINational Park
60.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 distinct species · 1 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°
-1,6°C
Annual rain
364mm
Moisture idx (CMI)
-0,50
Runoff
88mm/an
PET
724mm
AET
325mm
Mean slope
4,9°
Water table
135cm
Forest
0%
Crops
5%
Urban
0%
Protected
19%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)