HydroBASINS lev08 watershed · #3080221740
Bassin de Олой
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 : Bilibinskiy rayon
Sub-basin area
1 604,9km²
Upstream area
9 494,3km²
Discharge
65,36m³/s
Mean elev.
777m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Олой588 km²
- Bassin de Андыливан225 km²
1 dept-equivalent regions (GADM L2)
- 1615.6 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 distinct species · 9 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°
-14,2°C
Annual rain
315mm
Moisture idx (CMI)
-0,03
Runoff
238mm/an
PET
325mm
AET
249mm
Mean slope
13,6°
Water table
277cm
Forest
19%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)