HydroBASINS lev08 watershed · #3080526680
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
387,2km²
Upstream area
80 503,6km²
Discharge
769,62m³/s
Mean elev.
777m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Тас-Юрях1108 km²
- Bassin de Олёкма347 km²
1 dept-equivalent regions (GADM L2)
- 389.1 km²100.0% of basin
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°
-7,4°C
Annual rain
429mm
Moisture idx (CMI)
-0,24
Runoff
288mm/an
PET
567mm
AET
372mm
Mean slope
11,6°
Water table
335cm
Forest
72%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)