HydroBASINS lev08 watershed · #3080538920
Bassin de Олёкма
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 : Tyndinskiy rayon
Sub-basin area
1 481km²
Upstream area
43 422,4km²
Discharge
373,52m³/s
Mean elev.
814m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Олёкма1358 km²
- Bassin de Балыктах894 km²
1 dept-equivalent regions (GADM L2)
- 1488.1 km²100.0% of basin
1 intersecting protected areas
Olekminskij
IUCN IVState Natural Zakaznik
1484.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
41 distinct species · 70 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 2 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 Олёкма : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
-7,3°C
Annual rain
445mm
Moisture idx (CMI)
-0,22
Runoff
295mm/an
PET
575mm
AET
385mm
Mean slope
13,5°
Water table
388cm
Forest
74%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)