HydroBASINS lev08 watershed · #2080320800
Bassin de Волга
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 5 administrative regions : Cherdaklinskiy rayon, Staromaynskiy rayon, Tetyushskiy rayon, Water body
Sub-basin area
563,1km²
Upstream area
1 181 786,4km²
Discharge
7 640,83m³/s
Mean elev.
65m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Майна1377 km²
- Bassin de Майна95 km²
5 dept-equivalent regions (GADM L2)
- Water bodyUl'yanovsk · Russia325.3 km²57.5% of basin
- 120.6 km²21.3% of basin
- 47.5 km²8.4% of basin
- Staromaynskiy rayonUl'yanovsk · Russia45.7 km²8.1% of basin
- Cherdaklinskiy rayonUl'yanovsk · Russia26.6 km²4.7% of basin
1 intersecting protected areas
SHHuch`i gory
IUCN IIINatural Monument
39.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
249 distinct species · 773 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Волга : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 87 interactions GloBI sur 6 types (connectance 9.2%, filtre Serrano α=0.2). 13 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°
4,4°C
Annual rain
516mm
Moisture idx (CMI)
-0,25
Runoff
130mm/an
PET
690mm
AET
437mm
Mean slope
0,8°
Water table
58cm
Forest
19%
Crops
33%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)