HydroBASINS lev08 watershed · #2080262460
Bassin de Ситня
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 : Porkhovskiy rayon, Soletskiy rayon, Strugo-Krasnenskiy rayon
Sub-basin area
889,7km²
Upstream area
889,8km²
Discharge
7,85m³/s
Mean elev.
82m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Strugo-Krasnenskiy rayonPskov · Russia440.2 km²49.2% of basin
- Porkhovskiy rayonPskov · Russia290.7 km²32.5% of basin
- 163.5 km²18.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
638 distinct species · 1 689 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 Ситня : 29 espèces reliées par 73 interactions GloBI sur 6 types (connectance 9.4%, filtre Serrano α=0.2). 11 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°
4,5°C
Annual rain
642mm
Moisture idx (CMI)
0,06
Runoff
274mm/an
PET
601mm
AET
462mm
Mean slope
0,8°
Water table
52cm
Forest
85%
Crops
5%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)