HydroBASINS lev08 watershed · #3080621880
Bassin de Сарма
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 : Kachugskiy rayon, Ol'khonskiy rayon, Water body
Sub-basin area
1 047,5km²
Upstream area
1 047,5km²
Discharge
4,88m³/s
Mean elev.
985m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Ol'khonskiy rayonIrkutsk · Russia985.8 km²93.7% of basin
- Water bodyIrkutsk · Russia41.7 km²4.0% of basin
- Kachugskiy rayonIrkutsk · Russia24.3 km²2.3% of basin
1 intersecting protected areas
Lake Baikal
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
794.57 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
785 distinct species · 3 806 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Сарма : 21 espèces reliées par 27 interactions GloBI sur 3 types (connectance 7.7%, 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°
-4,3°C
Annual rain
412mm
Moisture idx (CMI)
-0,30
Runoff
147mm/an
PET
595mm
AET
359mm
Mean slope
8,3°
Water table
183cm
Forest
83%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)