HydroBASINS lev08 watershed · #2080371000
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 : Balakovskiy rayon, Dukhovnitskiy rayon, Khvalynsk, Khvalynskiy rayon, Vol'skiy rayon
Sub-basin area
881,1km²
Upstream area
1 285 049,1km²
Discharge
8 021,2m³/s
Mean elev.
64m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Волга995 km²
- Bassin de Чагра200 km²
5 dept-equivalent regions (GADM L2)
- 484.9 km²54.8% of basin
- 366.8 km²41.5% of basin
- 15.7 km²1.8% of basin
- 15.4 km²1.7% of basin
- 1.8 km²0.2% of basin
3 intersecting protected areas
Hvalynskij
IUCN IINational Park
60.10 km² overlap
Bol`shie i Malye sosnyaki
IUCN IIINatural Monument
6.71 km² overlap
Natural Monument
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 382 distinct species · 3 015 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 5 types (connectance 6.9%, filtre Serrano α=0.2). 8 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°
5,4°C
Annual rain
500mm
Moisture idx (CMI)
-0,35
Runoff
131mm/an
PET
771mm
AET
424mm
Mean slope
1,5°
Water table
115cm
Forest
11%
Crops
57%
Urban
2%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)