HydroBASINS lev08 watershed · #2080278970
Bassin de Сорога
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 : Ostashkov, Ostashkovskiy rayon, Penovskiy rayon, Selizharovskiy rayon
Sub-basin area
591,3km²
Upstream area
2 180,5km²
Discharge
18,76m³/s
Mean elev.
226m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Глушица676 km²
- Bassin de Княжа92 km²
4 dept-equivalent regions (GADM L2)
- Ostashkovskiy rayonTver' · Russia570.5 km²96.0% of basin
- Selizharovskiy rayonTver' · Russia15.9 km²2.7% of basin
- 4.1 km²0.7% of basin
- Penovskiy rayonTver' · Russia3.7 km²0.6% of basin
8 intersecting protected areas
State Natural Zakaznik
57.16 km² overlap
Ozero Sig
IUCN IIINatural Monument
31.24 km² overlap
Boloto Moh CHistik-1
IUCN IVState Natural Zakaznik
22.96 km² overlap
Natural Monument
15.07 km² overlap
Boloto Kletinskij Moh
IUCN IVState Natural Zakaznik
13.82 km² overlap
Urevy
IUCN IVState Natural Zakaznik
9.80 km² overlap
Natural Monument
0.36 km² overlap
Ostrov Klichen
IUCN IIINatural Monument
0.32 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
502 distinct species · 1 023 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 Сорога : 38 espèces reliées par 109 interactions GloBI sur 5 types (connectance 9.7%, 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°
3,7°C
Annual rain
659mm
Moisture idx (CMI)
0,05
Runoff
267mm/an
PET
623mm
AET
483mm
Mean slope
0,9°
Water table
81cm
Forest
80%
Crops
6%
Urban
1%
Protected
20%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)