HydroBASINS lev08 watershed · #3080468370
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
802,9km²
Upstream area
101 174,9km²
Discharge
978,83m³/s
Mean elev.
510m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Тас-Хайко935 km²
- Bassin de Олёкма160 km²
1 dept-equivalent regions (GADM L2)
- 807.2 km²100.0% of basin
1 intersecting protected areas
Olekminskij
IUCN IaState Natural Zapovednik
553.92 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
13 distinct species · 14 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°
-6,8°C
Annual rain
385mm
Moisture idx (CMI)
-0,32
Runoff
232mm/an
PET
571mm
AET
338mm
Mean slope
6,9°
Water table
191cm
Forest
97%
Crops
0%
Urban
0%
Protected
67%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)