HydroBASINS lev08 watershed · #2080293750
Bassin de Велеса
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 : Andreapol'skiy rayon, Nelidovskiy rayon, Toropetskiy rayon, Zapadnodvinskiy rayon
Sub-basin area
978,1km²
Upstream area
978,1km²
Discharge
8,34m³/s
Mean elev.
213m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Zapadnodvinskiy rayonTver' · Russia688.9 km²70.1% of basin
- Andreapol'skiy rayonTver' · Russia207.8 km²21.1% of basin
- Nelidovskiy rayonTver' · Russia78.4 km²8.0% of basin
- Toropetskiy rayonTver' · Russia7.7 km²0.8% of basin
17 intersecting protected areas
Zapadnodvinskij
IUCN IVState Natural Zakaznik
83.03 km² overlap
State Natural Zakaznik
55.31 km² overlap
Boloto Dyatlovskoe
IUCN IVState Natural Zakaznik
24.55 km² overlap
Boloto Bortishhevo
IUCN IVState Natural Zakaznik
16.27 km² overlap
Boloto Rogovskij Moh
IUCN IVState Natural Zakaznik
14.07 km² overlap
Boloto u d. Abakanovo
IUCN IVState Natural Zakaznik
11.82 km² overlap
Boloto Zabezhinskij Moh
IUCN IVState Natural Zakaznik
8.33 km² overlap
Boloto u d. Savino
IUCN IVState Natural Zakaznik
5.30 km² overlap
Boloto Derbitka
IUCN IVState Natural Zakaznik
5.09 km² overlap
8 more protected areassorted by overlap area
Boloto Drogachevskoe
IUCN IVState Natural Zakaznik
4.35 km² overlap
Boloto Polyaki
IUCN IVState Natural Zakaznik
3.01 km² overlap
Boloto u d. SHatry
IUCN IVState Natural Zakaznik
2.79 km² overlap
Boloto u d. Sosvyatskoe
IUCN IVState Natural Zakaznik
2.77 km² overlap
Boloto Pustoshkinskij Moh
IUCN IVState Natural Zakaznik
1.81 km² overlap
Boloto Podberez`e
IUCN IVState Natural Zakaznik
1.14 km² overlap
Natural Monument
0.54 km² overlap
Boloto Moh Pushnyak
IUCN IVState Natural Zakaznik
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
234 distinct species · 343 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 Велеса : 19 espèces reliées par 33 interactions GloBI sur 4 types (connectance 13.0%, filtre Serrano α=0.2). 4 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°
4,2°C
Annual rain
641mm
Moisture idx (CMI)
0,01
Runoff
270mm/an
PET
635mm
AET
488mm
Mean slope
1,1°
Water table
69cm
Forest
92%
Crops
3%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)