HydroBASINS lev08 watershed · #2080320870
Bassin de Урень
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 : Cherdaklinskiy rayon, Melekesskiy rayon, Staromaynskiy rayon, Water body
Sub-basin area
1 183,6km²
Upstream area
1 183,6km²
Discharge
5,06m³/s
Mean elev.
84m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Cherdaklinskiy rayonUl'yanovsk · Russia812.6 km²68.4% of basin
- Water bodyUl'yanovsk · Russia248.7 km²20.9% of basin
- Melekesskiy rayonUl'yanovsk · Russia115.2 km²9.7% of basin
- Staromaynskiy rayonUl'yanovsk · Russia12.3 km²1.0% of basin
2 intersecting protected areas
Urochishhe Oreshnik
IUCN IIINatural Monument
0.52 km² overlap
PKO Pribrezhnyj
IUCN Not ReportedLandscape Park
0.43 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 668 distinct species · 7 087 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Урень : 24 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 3 types (connectance 13.2%, 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°
4,4°C
Annual rain
516mm
Moisture idx (CMI)
-0,26
Runoff
135mm/an
PET
694mm
AET
437mm
Mean slope
0,6°
Water table
57cm
Forest
10%
Crops
66%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)