HydroBASINS lev08 watershed · #3080503540
Bassin de Большая Тира
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 : Kirenskiy rayon, Ust'-Kutskiy rayon
Sub-basin area
839,6km²
Upstream area
2 881,4km²
Discharge
13,94m³/s
Mean elev.
471m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Большая Тира143 km²
- Bassin de Большая Тира105 km²
2 dept-equivalent regions (GADM L2)
- Ust'-Kutskiy rayonIrkutsk · Russia584.5 km²69.3% of basin
- Kirenskiy rayonIrkutsk · Russia259.4 km²30.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
71 distinct species · 97 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 8 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 Тира : 7 espèces reliées par 8 interactions GloBI sur 3 types (connectance 17.8%, filtre Serrano α=0.2). 3 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°
-5,1°C
Annual rain
401mm
Moisture idx (CMI)
-0,33
Runoff
138mm/an
PET
600mm
AET
348mm
Mean slope
4,0°
Water table
85cm
Forest
99%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)