HydroBASINS lev08 watershed · #3080590480
Bassin de Ия
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 : Kuytunskiy rayon, Tulunskiy rayon
Sub-basin area
827,9km²
Upstream area
13 190,2km²
Discharge
139,45m³/s
Mean elev.
506m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ия632 km²
- Bassin de Кирей89 km²
2 dept-equivalent regions (GADM L2)
- Tulunskiy rayonIrkutsk · Russia474.5 km²57.1% of basin
- Kuytunskiy rayonIrkutsk · Russia357.0 km²42.9% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
180 distinct species · 427 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 Ия : 14 espèces reliées par 24 interactions GloBI sur 3 types (connectance 10.4%, filtre Serrano α=0.2). 8 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°
-1,5°C
Annual rain
389mm
Moisture idx (CMI)
-0,43
Runoff
218mm/an
PET
687mm
AET
342mm
Mean slope
1,3°
Water table
16cm
Forest
76%
Crops
30%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)