HydroBASINS lev08 watershed · #3080603600
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 : Zalarinskiy rayon, Ziminskiy rayon
Sub-basin area
400,7km²
Upstream area
21 670,5km²
Discharge
192,83m³/s
Mean elev.
501m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Тагна (Хор-Тагна)2509 km²
- Bassin de Ока2500 km²
2 dept-equivalent regions (GADM L2)
- Zalarinskiy rayonIrkutsk · Russia308.1 km²76.6% of basin
- Ziminskiy rayonIrkutsk · Russia94.3 km²23.4% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
29 distinct species · 29 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 13 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 Ока : 12 espèces reliées par 10 interactions GloBI sur 2 types (connectance 12.8%, filtre Serrano α=0.2). 1 bulle taxonomique (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
369mm
Moisture idx (CMI)
-0,47
Runoff
229mm/an
PET
695mm
AET
326mm
Mean slope
1,8°
Water table
24cm
Forest
80%
Crops
19%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)