HydroBASINS lev08 watershed · #2080354170
Bassin de Большая Вязовка
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 4 administrative regions : Bol'sheglushitskiy rayon, Krasnoarmeyskiy rayon, Pestravskiy rayon, Volzhskiy rayon
Sub-basin area
771,9km²
Upstream area
772km²
Discharge
2,55m³/s
Mean elev.
106m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Krasnoarmeyskiy rayonSamara · Russia674.4 km²87.0% of basin
- Bol'sheglushitskiy rayonSamara · Russia91.3 km²11.8% of basin
- Pestravskiy rayonSamara · Russia7.9 km²1.0% of basin
- Volzhskiy rayonSamara · Russia1.5 km²0.2% of basin
1 intersecting protected areas
Istoki reki B. Vyazovka
IUCN IIINatural Monument
0.95 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
152 distinct species · 245 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Большая Вязовка : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 6 types (connectance 14.0%, filtre Serrano α=0.2). 7 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°
4,8°C
Annual rain
489mm
Moisture idx (CMI)
-0,35
Runoff
104mm/an
PET
747mm
AET
414mm
Mean slope
1,3°
Water table
181cm
Forest
0%
Crops
69%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)