HydroBASINS lev08 watershed · #3080558830
Bassin de Ока
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 : Balaganskiy rayon, Bratskiy rayon
Sub-basin area
1 468,2km²
Upstream area
41 380,8km²
Discharge
280,47m³/s
Mean elev.
459m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ока1463 km²
- Bassin de Ока792 km²
2 dept-equivalent regions (GADM L2)
- Bratskiy rayonIrkutsk · Russia1335.0 km²90.5% of basin
- Balaganskiy rayonIrkutsk · Russia140.0 km²9.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
15 distinct species · 15 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°
-1,8°C
Annual rain
369mm
Moisture idx (CMI)
-0,45
Runoff
4mm/an
PET
666mm
AET
326mm
Mean slope
3,0°
Water table
79cm
Forest
76%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)