HydroBASINS lev08 watershed · #2080256170
Bassin de Волма
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 3 administrative regions : Krestetskiy rayon, Malovisherskiy rayon, Okulovskiy rayon
Sub-basin area
774,8km²
Upstream area
774,9km²
Discharge
7,86m³/s
Mean elev.
144m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 365.0 km²46.9% of basin
- 270.3 km²34.7% of basin
- 143.6 km²18.4% of basin
4 intersecting protected areas
Landshaft doliny reki Verebushka
IUCN IIINatural Monument
4.81 km² overlap
Zaruchev`e
IUCN IIINatural Monument
3.80 km² overlap
Roshha akademika N.I.ZHeleznova
IUCN IIINatural Monument
2.10 km² overlap
Natural Monument
1.65 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
145 distinct species · 203 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Волма : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 4 types (connectance 9.2%, 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°
3,6°C
Annual rain
704mm
Moisture idx (CMI)
0,12
Runoff
318mm/an
PET
618mm
AET
476mm
Mean slope
1,6°
Water table
104cm
Forest
97%
Crops
2%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)