HydroBASINS lev08 watershed · #4080002070
Bassin de Ольга
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 : Kavalerovskiy rayon, Lazovskiy rayon
Sub-basin area
933,3km²
Upstream area
933,3km²
Discharge
1,14m³/s
Mean elev.
165m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 887.8 km²94.9% of basin
- 16.1 km²1.7% of basin
1 intersecting protected areas
Natural Monument
0.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 136 distinct species · 4 080 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Ольга : 30 espèces reliées par 29 interactions GloBI sur 3 types (connectance 5.8%, filtre Serrano α=0.2). 2 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°
4,7°C
Annual rain
785mm
Moisture idx (CMI)
0,09
Runoff
278mm/an
PET
711mm
AET
627mm
Mean slope
9,8°
Water table
212cm
Forest
98%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)