HydroBASINS lev08 watershed · #4080130190
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 5 administrative regions across 2 countries : Aginskiy rayon, Dashbalbar, Mogoytuyskiy rayon, Olovyanninskiy rayon, Ononskiy rayon
Sub-basin area
2 381,8km²
Upstream area
58 833,1km²
Discharge
136,64m³/s
Mean elev.
699m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 3 basins
- Bassin de Онон1766 km²
- Bassin de Онон828 km²
- Bassin · #4080060090699 km²
5 dept-equivalent regions (GADM L2)
- 1036.5 km²43.4% of basin
- 840.5 km²35.2% of basin
- 482.8 km²20.2% of basin
- 17.1 km²0.7% of basin
- 13.3 km²0.6% of basin
5 intersecting protected areas
Aginskaya step`
IUCN IVState Natural Zakaznik
115.57 km² overlap
Landscapes of Dauria
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
19.30 km² overlap
Natural Monument
14.01 km² overlap
Urochishhe Malyj Bator
IUCN IIINatural Monument
0.11 km² overlap
Natural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
785 distinct species · 3 149 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 32 espèces reliées par 83 interactions GloBI sur 3 types (connectance 9.6%, filtre Serrano α=0.2). 10 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°
-1,3°C
Annual rain
353mm
Moisture idx (CMI)
-0,52
Runoff
59mm/an
PET
739mm
AET
316mm
Mean slope
2,3°
Water table
64cm
Forest
4%
Crops
4%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)