HydroBASINS lev08 watershed · #3080512210
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
242,8km²
Upstream area
89 011km²
Discharge
859,7m³/s
Mean elev.
869m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Олёкма182 km²
- Bassin de Хани174 km²
1 dept-equivalent regions (GADM L2)
- 244.1 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 distinct species · 4 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°
-8,1°C
Annual rain
426mm
Moisture idx (CMI)
-0,22
Runoff
312mm/an
PET
551mm
AET
368mm
Mean slope
21,1°
Water table
507cm
Forest
53%
Crops
0%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)