HydroBASINS lev08 watershed · #2080236750
Bassin de Ижора
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 6 administrative regions : Gatchina, Gatchinskiy rayon, Lomonosovskiy rayon, Sankt-Peterburg gorsovet, Tosnenskiy rayon +1
Sub-basin area
1 445,4km²
Upstream area
1 445,5km²
Discharge
7,57m³/s
Mean elev.
99m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 521.9 km²35.9% of basin
- 329.2 km²22.6% of basin
- 278.7 km²19.2% of basin
- 207.4 km²14.3% of basin
- 114.6 km²7.9% of basin
- 1.6 km²0.1% of basin
2 intersecting protected areas
Lisinskij
IUCN IVState Natural Zakaznik
29.23 km² overlap
Dudergofskie vysoty
IUCN IIINatural Monument
0.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 582 distinct species · 49 129 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Ижора : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 63 interactions GloBI sur 5 types (connectance 17.9%, filtre Serrano α=0.2). 10 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°
4,4°C
Annual rain
660mm
Moisture idx (CMI)
0,15
Runoff
188mm/an
PET
561mm
AET
438mm
Mean slope
0,9°
Water table
50cm
Forest
50%
Crops
37%
Urban
15%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)