HydroBASINS lev08 watershed · #3080594040
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 : Tungiro-Olekminskiy rayon, Tungokochenskiy rayon
Sub-basin area
785,8km²
Upstream area
2 391,2km²
Discharge
12,62m³/s
Mean elev.
965m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Олёкма1215 km²
- Bassin de Большой Чокур391 km²
2 dept-equivalent regions (GADM L2)
- 787.8 km²99.8% of basin
- 1.5 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 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°
-7,5°C
Annual rain
435mm
Moisture idx (CMI)
-0,28
Runoff
200mm/an
PET
606mm
AET
381mm
Mean slope
6,7°
Water table
195cm
Forest
73%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)