HydroBASINS lev08 watershed · #2080347750
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 : Kuzovatovskiy rayon, Nikolaevskiy rayon, Novospasskiy rayon
Sub-basin area
327,6km²
Upstream area
1 533,3km²
Discharge
5,43m³/s
Mean elev.
194m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Сызранка687 km²
- Bassin de Бекшанка518 km²
3 dept-equivalent regions (GADM L2)
- Nikolaevskiy rayonUl'yanovsk · Russia237.7 km²72.3% of basin
- Kuzovatovskiy rayonUl'yanovsk · Russia85.1 km²25.9% of basin
- Novospasskiy rayonUl'yanovsk · Russia6.1 km²1.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
238 distinct species · 250 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 : 20 espèces reliées par 45 interactions GloBI sur 5 types (connectance 9.7%, 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°
4,5°C
Annual rain
548mm
Moisture idx (CMI)
-0,24
Runoff
117mm/an
PET
721mm
AET
461mm
Mean slope
2,3°
Water table
196cm
Forest
53%
Crops
27%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)