HydroBASINS lev08 watershed · #2080307350
Bassin de Половья
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 2 administrative regions : Demidovskiy rayon, Velizhskiy rayon
Sub-basin area
618,3km²
Upstream area
618,3km²
Discharge
5,01m³/s
Mean elev.
189m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Demidovskiy rayonSmolensk · Russia619.5 km²99.7% of basin
- Velizhskiy rayonSmolensk · Russia1.7 km²0.3% of basin
1 intersecting protected areas
Smolemsk Lakeland
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
266.26 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 109 distinct species · 8 663 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Половья : 26 espèces reliées par 92 interactions GloBI sur 4 types (connectance 16.4%, filtre Serrano α=0.2). 8 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°
4,9°C
Annual rain
642mm
Moisture idx (CMI)
-0,01
Runoff
255mm/an
PET
647mm
AET
492mm
Mean slope
1,1°
Water table
96cm
Forest
73%
Crops
12%
Urban
0%
Protected
43%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)