HydroBASINS lev08 watershed · #2080344490
Bassin de Сызранка
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 : Baryshskiy rayon, Kuzovatovskiy rayon, Nikolaevskiy rayon
Sub-basin area
687,4km²
Upstream area
687,4km²
Discharge
2,42m³/s
Mean elev.
228m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Baryshskiy rayonUl'yanovsk · Russia442.9 km²64.2% of basin
- Kuzovatovskiy rayonUl'yanovsk · Russia223.2 km²32.3% of basin
- Nikolaevskiy rayonUl'yanovsk · Russia24.2 km²3.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
283 distinct species · 509 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Сызранка : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 55 interactions GloBI sur 4 types (connectance 11.8%, filtre Serrano α=0.2). 10 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
554mm
Moisture idx (CMI)
-0,22
Runoff
111mm/an
PET
710mm
AET
465mm
Mean slope
2,5°
Water table
202cm
Forest
50%
Crops
33%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)