HydroBASINS lev08 watershed · #3080510610
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
17,7km²
Upstream area
90 704,3km²
Discharge
882,6m³/s
Mean elev.
633m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Олдонгдо989 km²
- Bassin de Олёкма297 km²
1 dept-equivalent regions (GADM L2)
- 17.8 km²100.0% of basin
1 intersecting protected areas
WWF-Saha (CHaruoda)
IUCN VIResource Reserve
8.52 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 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°
-6,7°C
Annual rain
399mm
Moisture idx (CMI)
-0,30
Runoff
308mm/an
PET
577mm
AET
352mm
Mean slope
19,1°
Water table
581cm
Forest
59%
Crops
0%
Urban
0%
Protected
47%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)