HydroBASINS lev08 watershed · #3080509150
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
47,2km²
Upstream area
91 811,3km²
Discharge
895,78m³/s
Mean elev.
773m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Тунгурчакан839 km²
- Bassin de Токур54 km²
1 dept-equivalent regions (GADM L2)
- 47.4 km²100.0% of basin
1 intersecting protected areas
WWF-Saha (CHaruoda)
IUCN VIResource Reserve
7.59 km² overlap
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°
-7,6°C
Annual rain
427mm
Moisture idx (CMI)
-0,23
Runoff
301mm/an
PET
557mm
AET
370mm
Mean slope
12,3°
Water table
348cm
Forest
79%
Crops
0%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)