HydroBASINS lev08 watershed · #2080261630
Bassin de Соминка
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 : Parfinskiy rayon, Staraya Russa, Starorusskiy rayon, Water body
Sub-basin area
132,3km²
Upstream area
3 793,1km²
Discharge
32,47m³/s
Mean elev.
25m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Порусья1022 km²
- Bassin de Полисть12 km²
4 dept-equivalent regions (GADM L2)
- 110.7 km²83.2% of basin
- 9.4 km²7.1% of basin
- 6.9 km²5.2% of basin
- 6.0 km²4.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
49 distinct species · 70 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Соминка : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 3 types (connectance 14.0%, 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°
4,3°C
Annual rain
588mm
Moisture idx (CMI)
-0,06
Runoff
240mm/an
PET
623mm
AET
461mm
Mean slope
0,3°
Water table
17cm
Forest
39%
Crops
9%
Urban
8%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)