HydroBASINS lev08 watershed · #2080311910
Bassin de Свияга
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 2 administrative regions : Buinskiy rayon, Tetyushskiy rayon
Sub-basin area
296,9km²
Upstream area
8 325,9km²
Discharge
27,22m³/s
Mean elev.
107m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Кильна562 km²
- Bassin de Большая Тельца365 km²
2 dept-equivalent regions (GADM L2)
- 251.1 km²84.2% of basin
- 47.2 km²15.8% of basin
3 intersecting protected areas
Reka Sviyaga
IUCN IIINatural Monument
23.44 km² overlap
Zeya bujlary
IUCN IVState Natural Zakaznik
11.36 km² overlap
Park imeniya dekabrista V.G. Ivasheva
IUCN Not ReportedNatural Monument
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
42 distinct species · 61 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 Свияга : 12 espèces reliées par 12 interactions GloBI sur 3 types (connectance 13.2%, filtre Serrano α=0.2). 2 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
526mm
Moisture idx (CMI)
-0,22
Runoff
118mm/an
PET
677mm
AET
444mm
Mean slope
1,1°
Water table
94cm
Forest
6%
Crops
67%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)