HydroBASINS lev08 watershed · #3080624870
Bassin de Большая Иреть
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 : Alarskiy rayon, Cheremkhovskiy rayon, Zalarinskiy rayon
Sub-basin area
2 373,2km²
Upstream area
2 373,3km²
Discharge
16,79m³/s
Mean elev.
531m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Cheremkhovskiy rayonIrkutsk · Russia1343.0 km²56.4% of basin
- Alarskiy rayonIrkutsk · Russia808.9 km²33.9% of basin
- Zalarinskiy rayonIrkutsk · Russia231.1 km²9.7% of basin
2 intersecting protected areas
Batorova Roshha
IUCN IIINatural Monument
23.78 km² overlap
Natural Monument
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
437 distinct species · 972 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 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 Большая Иреть : 13 espèces reliées par 21 interactions GloBI sur 3 types (connectance 12.3%, filtre Serrano α=0.2). 6 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°
-1,1°C
Annual rain
385mm
Moisture idx (CMI)
-0,45
Runoff
216mm/an
PET
700mm
AET
339mm
Mean slope
2,3°
Water table
41cm
Forest
40%
Crops
56%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)