HydroBASINS lev08 watershed · #2080308460
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 5 administrative regions : Alatyrskiy rayon, Ardatovskiy rayon, Batyrevskiy rayon, Ibresinskiy rayon, Poretsskiy rayon
Sub-basin area
1 340,6km²
Upstream area
50 017,9km²
Discharge
192,1m³/s
Mean elev.
141m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Алатырь1237 km²
- Bassin de Сура20 km²
5 dept-equivalent regions (GADM L2)
- 814.5 km²60.5% of basin
- 418.3 km²31.1% of basin
- 83.0 km²6.2% of basin
- 19.4 km²1.4% of basin
- 11.5 km²0.9% of basin
2 intersecting protected areas
Prisurskij
IUCN IaState Natural Zapovednik
90.23 km² overlap
YAvlejskaya roshha
IUCN IIINatural Monument
1.87 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 172 distinct species · 13 668 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 10 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°
4,0°C
Annual rain
526mm
Moisture idx (CMI)
-0,21
Runoff
89mm/an
PET
663mm
AET
444mm
Mean slope
1,3°
Water table
160cm
Forest
60%
Crops
20%
Urban
0%
Protected
21%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)