HydroBASINS lev08 watershed · #4080097860
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 : Magdagachinskiy rayon, Zeyskiy rayon
Sub-basin area
1 186,9km²
Upstream area
1 187km²
Discharge
4,2m³/s
Mean elev.
342m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1185.5 km²99.5% of basin
- 6.3 km²0.5% of basin
1 intersecting protected areas
Magdagachinskij
IUCN IVState Natural Zakaznik
97.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
75 distinct species · 76 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 9 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 : 8 espèces reliées par 8 interactions GloBI sur 2 types (connectance 22.2%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
-3,5°C
Annual rain
521mm
Moisture idx (CMI)
-0,23
Runoff
112mm/an
PET
677mm
AET
449mm
Mean slope
1,8°
Water table
32cm
Forest
54%
Crops
1%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)