HydroBASINS lev08 watershed · #2080216650
Bassin de Семженьга
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 1 administrative regions : Vel'skiy rayon
Sub-basin area
222,7km²
Upstream area
3 856,7km²
Discharge
37,44m³/s
Mean elev.
145m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Шеноша605 km²
- Bassin de Малая166 km²
1 dept-equivalent regions (GADM L2)
- Vel'skiy rayonArkhangel'sk · Russia224.0 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
248 distinct species · 346 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Семженьга : 30 espèces reliées par 54 interactions GloBI sur 7 types (connectance 7.3%, 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°
1,5°C
Annual rain
626mm
Moisture idx (CMI)
0,11
Runoff
256mm/an
PET
556mm
AET
435mm
Mean slope
3,3°
Water table
70cm
Forest
96%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)