HydroBASINS lev08 watershed · #2080339010
Bassin de Иста
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 6 administrative regions : Arsen'evskiy rayon, Belevskiy rayon, Bolkhovskiy rayon, Chernskiy rayon, Mtsenskiy rayon +1
Sub-basin area
930,1km²
Upstream area
15 005,9km²
Discharge
86,06m³/s
Mean elev.
207m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ока737 km²
- Bassin de Сальница153 km²
6 dept-equivalent regions (GADM L2)
- Arsen'evskiy rayonTula · Russia700.4 km²75.0% of basin
- Bolkhovskiy rayonOrel · Russia122.1 km²13.1% of basin
- Mtsenskiy rayonOrel · Russia81.7 km²8.8% of basin
- Belevskiy rayonTula · Russia23.6 km²2.5% of basin
- Chernskiy rayonTula · Russia6.1 km²0.7% of basin
- Plavskiy rayonTula · Russia0.1 km²0.0% of basin
1 intersecting protected areas
Duby Devyat` brat`ev
IUCN IIINatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
953 distinct species · 2 783 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 Иста : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 97 interactions GloBI sur 6 types (connectance 15.4%, filtre Serrano α=0.2). 5 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°
5,0°C
Annual rain
629mm
Moisture idx (CMI)
-0,08
Runoff
202mm/an
PET
683mm
AET
502mm
Mean slope
1,8°
Water table
192cm
Forest
10%
Crops
58%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)