HydroBASINS lev08 watershed · #2080324380
Bassin de Сура
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'shebereznikovskiy rayon, Dubenskiy rayon, Inzenski rayon, Karsunskiy rayon
Sub-basin area
487,6km²
Upstream area
26 908,1km²
Discharge
112,51m³/s
Mean elev.
192m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Аргаш399 km²
- Bassin de Ташага288 km²
4 dept-equivalent regions (GADM L2)
- Inzenski rayonUl'yanovsk · Russia300.1 km²61.3% of basin
- Karsunskiy rayonUl'yanovsk · Russia88.9 km²18.1% of basin
- 88.2 km²18.0% of basin
- 12.5 km²2.6% of basin
1 intersecting protected areas
Sosnovskij
IUCN IVState Natural Zakaznik
8.21 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
504 distinct species · 1 130 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 Сура : 19 espèces reliées par 74 interactions GloBI sur 3 types (connectance 15.9%, filtre Serrano α=0.2). 12 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
548mm
Moisture idx (CMI)
-0,20
Runoff
112mm/an
PET
687mm
AET
459mm
Mean slope
2,0°
Water table
139cm
Forest
53%
Crops
24%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)