HydroBASINS lev08 watershed · #3080051700
Bassin de Оленёк
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 1 administrative regions : Bulunskiy rayon
Sub-basin area
1 650,3km²
Upstream area
206 367,5km²
Discharge
1 231,9m³/s
Mean elev.
91m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #3080054580657 km²
- Bassin de Оленёк400 km²
1 dept-equivalent regions (GADM L2)
- 1663.1 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
289 distinct species · 447 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 Оленёк : 15 espèces reliées par 26 interactions GloBI sur 1 type (connectance 12.4%, filtre Serrano α=0.2). 6 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°
-14,8°C
Annual rain
219mm
Moisture idx (CMI)
-0,30
Runoff
158mm/an
PET
312mm
AET
202mm
Mean slope
4,2°
Water table
86cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)