HydroBASINS lev08 watershed · #4080148700
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 : Bayan-Uul, Kyrinskiy rayon
Sub-basin area
554km²
Upstream area
40 812,1km²
Discharge
81,67m³/s
Mean elev.
1 001m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Кыра365 km²
- Bassin de Онон147 km²
2 dept-equivalent regions (GADM L2)
- 411.3 km²74.0% of basin
- 144.6 km²26.0% of basin
1 intersecting protected areas
Onon-Balj /B/
IUCN IINational Park
56.47 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
87 distinct species · 112 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Онон : 19 espèces reliées par 16 interactions GloBI sur 2 types (connectance 7.6%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
-0,2°C
Annual rain
297mm
Moisture idx (CMI)
-0,62
Runoff
62mm/an
PET
776mm
AET
269mm
Mean slope
6,4°
Water table
162cm
Forest
32%
Crops
6%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)