HydroBASINS lev08 watershed · #3080663290
Bassin de Сой
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 4 administrative regions : Erzinskiy rayon, Kaa-Khemskiy rayon, Tandinskiy rayon, Tes-Khemskiy rayon
Sub-basin area
2 811,4km²
Upstream area
2 811,5km²
Discharge
12,92m³/s
Mean elev.
1 287m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1517.7 km²53.8% of basin
- 674.6 km²23.9% of basin
- 570.7 km²20.2% of basin
- 58.6 km²2.1% of basin
6 intersecting protected areas
Balgazynskij
IUCN IVState Natural Zakaznik
290.87 km² overlap
CHagytajskij
IUCN IVState Natural Zakaznik
109.00 km² overlap
Durgenskij
IUCN IVState Natural Zakaznik
87.74 km² overlap
Ozero CHagytaj
IUCN IIINatural Monument
51.02 km² overlap
Ubsunorskaya Kotlovina
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
3.75 km² overlap
Uvs Nuur Basin
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
792 distinct species · 2 123 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Сой : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 38 interactions GloBI sur 4 types (connectance 6.4%, filtre Serrano α=0.2). 7 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°
-5,5°C
Annual rain
362mm
Moisture idx (CMI)
-0,45
Runoff
144mm/an
PET
665mm
AET
322mm
Mean slope
8,8°
Water table
205cm
Forest
72%
Crops
15%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)