HydroBASINS lev08 watershed · #3080569580
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 3 administrative regions : Balaganskiy rayon, Bratskiy rayon, Kuytunskiy rayon
Sub-basin area
1 463km²
Upstream area
39 120,6km²
Discharge
280,75m³/s
Mean elev.
516m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #30805759501556 km²
- Bassin de Ока493 km²
3 dept-equivalent regions (GADM L2)
- Balaganskiy rayonIrkutsk · Russia647.8 km²44.1% of basin
- Bratskiy rayonIrkutsk · Russia613.2 km²41.7% of basin
- Kuytunskiy rayonIrkutsk · Russia208.7 km²14.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
13 distinct species · 13 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°
-2,0°C
Annual rain
383mm
Moisture idx (CMI)
-0,42
Runoff
6mm/an
PET
664mm
AET
337mm
Mean slope
4,3°
Water table
121cm
Forest
87%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)