HydroBASINS lev08 watershed · #2080328220
Bassin de Свияга
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 7 administrative regions : Baryshskiy rayon, Kuzovatovskiy rayon, Maynskiy rayon, Sengileevskiy rayon, Teren'gul'skiy rayon +2
Sub-basin area
2 173,3km²
Upstream area
2 173,3km²
Discharge
7,21m³/s
Mean elev.
210m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- Kuzovatovskiy rayonUl'yanovsk · Russia1137.0 km²52.1% of basin
- Teren'gul'skiy rayonUl'yanovsk · Russia624.1 km²28.6% of basin
- Baryshskiy rayonUl'yanovsk · Russia367.4 km²16.8% of basin
- Maynskiy rayonUl'yanovsk · Russia40.6 km²1.9% of basin
- Veshkaymskiy rayonUl'yanovsk · Russia8.6 km²0.4% of basin
- Sengileevskiy rayonUl'yanovsk · Russia3.6 km²0.2% of basin
- Ul'yanovskiy rayonUl'yanovsk · Russia1.3 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
563 distinct species · 1 169 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Свияга : 29 espèces reliées par 77 interactions GloBI sur 6 types (connectance 9.9%, 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°
4,1°C
Annual rain
532mm
Moisture idx (CMI)
-0,24
Runoff
105mm/an
PET
701mm
AET
449mm
Mean slope
1,3°
Water table
142cm
Forest
23%
Crops
57%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)