HydroBASINS lev08 watershed · #2080291620
Bassin de Волга
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 5 administrative regions : Oleninskiy rayon, Rzhev, Rzhevskiy rayon, Staritskiy rayon, Zubtsovskiy rayon
Sub-basin area
1 872,5km²
Upstream area
12 702,4km²
Discharge
103,14m³/s
Mean elev.
218m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Волга1533 km²
- Bassin de Тудовка1378 km²
5 dept-equivalent regions (GADM L2)
- Rzhevskiy rayonTver' · Russia1422.2 km²75.6% of basin
- Oleninskiy rayonTver' · Russia434.3 km²23.1% of basin
- Staritskiy rayonTver' · Russia12.9 km²0.7% of basin
- Zubtsovskiy rayonTver' · Russia9.9 km²0.5% of basin
- 2.2 km²0.1% of basin
6 intersecting protected areas
Dacha Titov Bor
IUCN IIINatural Monument
13.23 km² overlap
Boloto u d. Zal`kovo
IUCN IVState Natural Zakaznik
8.90 km² overlap
Dacha Monchalovo
IUCN IIINatural Monument
5.71 km² overlap
State Natural Zakaznik
4.78 km² overlap
Park Mihirevo
IUCN Not ReportedNatural Monument
0.24 km² overlap
Boloto Talickoe-Turavec
IUCN IVState Natural Zakaznik
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
612 distinct species · 2 475 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Волга : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 3 types (connectance 14.9%, filtre Serrano α=0.2). 9 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°
4,0°C
Annual rain
640mm
Moisture idx (CMI)
0,01
Runoff
232mm/an
PET
631mm
AET
488mm
Mean slope
1,1°
Water table
105cm
Forest
48%
Crops
31%
Urban
2%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)