HydroBASINS lev08 watershed · #3080431200
Bassin de Сылгылыр
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 : Aldanskiy rayon, Olekminskiy rayon
Sub-basin area
1 908,3km²
Upstream area
1 908,3km²
Discharge
5,36m³/s
Mean elev.
428m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1896.7 km²98.8% of basin
- 22.4 km²1.2% of basin
3 intersecting protected areas
Kyrbykan
IUCN VIResource Reserve
1886.40 km² overlap
Munduruchchu
IUCN VIResource Reserve
21.14 km² overlap
Lena Pillars Nature Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
12 distinct species · 13 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°
-9,7°C
Annual rain
366mm
Moisture idx (CMI)
-0,32
Runoff
89mm/an
PET
534mm
AET
321mm
Mean slope
3,5°
Water table
93cm
Forest
86%
Crops
0%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)