HydroBASINS lev08 watershed · #2080364690
Bassin de Терешка
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 7 administrative regions : Khvalynskiy rayon, Nikolaevskiy rayon, Novospasskiy rayon, Pavlovskiy rayon, Radishchevskiy rayon +2
Sub-basin area
3 192,4km²
Upstream area
3 192,7km²
Discharge
15,14m³/s
Mean elev.
174m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- 975.9 km²30.4% of basin
- Radishchevskiy rayonUl'yanovsk · Russia953.3 km²29.7% of basin
- Starokulatkinskiy rayonUl'yanovsk · Russia808.4 km²25.2% of basin
- Nikolaevskiy rayonUl'yanovsk · Russia226.2 km²7.1% of basin
- 215.0 km²6.7% of basin
- Novospasskiy rayonUl'yanovsk · Russia26.2 km²0.8% of basin
- Pavlovskiy rayonUl'yanovsk · Russia0.2 km²0.0% of basin
4 intersecting protected areas
Starokulatkinskij
IUCN IVState Natural Zakaznik
102.46 km² overlap
Hvalynskij
IUCN IINational Park
95.11 km² overlap
Bogdanovskij
IUCN IVState Natural Zakaznik
18.86 km² overlap
Urochishhe Muhin dol
IUCN IIINatural Monument
0.82 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 045 distinct species · 5 979 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Терешка : 22 espèces reliées par 90 interactions GloBI sur 5 types (connectance 12.1%, filtre Serrano α=0.2). 17 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
541mm
Moisture idx (CMI)
-0,27
Runoff
150mm/an
PET
746mm
AET
455mm
Mean slope
2,1°
Water table
225cm
Forest
13%
Crops
64%
Urban
1%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)