HydroBASINS lev08 watershed · #2080347840
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 : Nikolaevskiy rayon, Novospasskiy rayon, Radishchevskiy rayon
Sub-basin area
633,2km²
Upstream area
3 173,6km²
Discharge
11,94m³/s
Mean elev.
172m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Канадейка1008 km²
- Bassin de Сызранка328 km²
3 dept-equivalent regions (GADM L2)
- Novospasskiy rayonUl'yanovsk · Russia423.9 km²66.7% of basin
- Nikolaevskiy rayonUl'yanovsk · Russia157.6 km²24.8% of basin
- Radishchevskiy rayonUl'yanovsk · Russia54.2 km²8.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
647 distinct species · 1 261 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 : 18 espèces reliées par 41 interactions GloBI sur 5 types (connectance 10.1%, filtre Serrano α=0.2). 11 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°
4,7°C
Annual rain
538mm
Moisture idx (CMI)
-0,26
Runoff
123mm/an
PET
730mm
AET
453mm
Mean slope
2,3°
Water table
217cm
Forest
20%
Crops
58%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)