HydroBASINS lev08 watershed · #2080424630
Bassin de Большой Узень
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 : Aleksandrovo-Gayskiy rayon, Novouzenskiy rayon
Sub-basin area
543,1km²
Upstream area
8 583,5km²
Discharge
23,3m³/s
Mean elev.
30m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Большой Узень2530 km²
- Bassin de Чертанла500 km²
2 dept-equivalent regions (GADM L2)
- 295.1 km²54.1% of basin
- 249.9 km²45.9% of basin
1 intersecting protected areas
Novouzenskie kul`tyuki
IUCN IIINatural Monument
4.74 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
319 distinct species · 346 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Большой Узень : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 21 interactions GloBI sur 3 types (connectance 8.3%, filtre Serrano α=0.2). 6 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°
6,4°C
Annual rain
322mm
Moisture idx (CMI)
-0,63
Runoff
61mm/an
PET
867mm
AET
282mm
Mean slope
0,1°
Water table
24cm
Forest
0%
Crops
36%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)