HydroBASINS lev08 watershed · #3080509860
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 : Olekminskiy rayon
Sub-basin area
296,9km²
Upstream area
89 698,2km²
Discharge
871,72m³/s
Mean elev.
886m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Тумуллур390 km²
- Bassin de Олёкма243 km²
1 dept-equivalent regions (GADM L2)
- 298.4 km²100.0% of basin
1 intersecting protected areas
WWF-Saha (CHaruoda)
IUCN VIResource Reserve
138.69 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 distinct species · 1 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
-8,2°C
Annual rain
431mm
Moisture idx (CMI)
-0,20
Runoff
312mm/an
PET
545mm
AET
371mm
Mean slope
19,0°
Water table
499cm
Forest
54%
Crops
0%
Urban
0%
Protected
47%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)