HydroBASINS lev08 watershed · #3080516790
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 2 administrative regions : Olekminskiy rayon, Tyndinskiy rayon
Sub-basin area
182,2km²
Upstream area
83 388,7km²
Discharge
803,01m³/s
Mean elev.
711m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Олёкма448 km²
- Bassin de Олёкма367 km²
2 dept-equivalent regions (GADM L2)
- 133.5 km²72.9% of basin
- 49.6 km²27.1% 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°
-7,2°C
Annual rain
407mm
Moisture idx (CMI)
-0,29
Runoff
303mm/an
PET
574mm
AET
356mm
Mean slope
12,7°
Water table
339cm
Forest
68%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)