HydroBASINS lev08 watershed · #2080314810
Bassin de Большая Тельца
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 : Buinskiy rayon, Drozhzhanovskiy rayon, Tetyushskiy rayon, Tsil'ninskiy rayon, Ul'yanovskiy rayon
Sub-basin area
364,6km²
Upstream area
7 466,8km²
Discharge
24,04m³/s
Mean elev.
127m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Цильна806 km²
- Bassin de Бугурна486 km²
5 dept-equivalent regions (GADM L2)
- 254.9 km²69.6% of basin
- 68.0 km²18.6% of basin
- Ul'yanovskiy rayonUl'yanovsk · Russia24.4 km²6.7% of basin
- 16.9 km²4.6% of basin
- Tsil'ninskiy rayonUl'yanovsk · Russia2.1 km²0.6% of basin
2 intersecting protected areas
Reka Sviyaga
IUCN IIINatural Monument
18.88 km² overlap
Natural Monument
1.25 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
52 distinct species · 65 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Тельца : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 27 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 3 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
528mm
Moisture idx (CMI)
-0,22
Runoff
109mm/an
PET
677mm
AET
445mm
Mean slope
0,9°
Water table
105cm
Forest
2%
Crops
67%
Urban
0%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)