HydroBASINS lev08 watershed · #4080157740
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 : Batshireet, Ömnödelger
Sub-basin area
327,8km²
Upstream area
327,8km²
Discharge
0,78m³/s
Mean elev.
1 678m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 190.4 km²57.9% of basin
- 138.4 km²42.1% of basin
1 intersecting protected areas
Khan Khentii
IUCN IbStrictly Protected Area
328.82 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 distinct species · 3 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°
-5,0°C
Annual rain
429mm
Moisture idx (CMI)
-0,31
Runoff
87mm/an
PET
627mm
AET
376mm
Mean slope
10,8°
Water table
263cm
Forest
66%
Crops
1%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)