HydroBASINS lev08 watershed · #3080121430
Bassin de Булгуннях-Сяне
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 : Nizhnekolymskiy rayon, Srednekolymskiy rayon
Sub-basin area
1 919,9km²
Upstream area
1 919,9km²
Discharge
5,2m³/s
Mean elev.
33m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1926.1 km²99.6% of basin
- 7.7 km²0.4% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 distinct species · 6 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°
-13,2°C
Annual rain
173mm
Moisture idx (CMI)
-0,53
Runoff
86mm/an
PET
373mm
AET
182mm
Mean slope
3,0°
Water table
57cm
Forest
13%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)