HydroBASINS lev08 watershed · #3080159210
Bassin de Яна
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 : Eveno-Bytantayskiy rayon, Verkhoyanskiy rayon
Sub-basin area
971,3km²
Upstream area
45 500,6km²
Discharge
156,71m³/s
Mean elev.
269m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Дулгалах637 km²
- Bassin de Дулгалах3 km²
2 dept-equivalent regions (GADM L2)
- 642.5 km²65.7% of basin
- 335.6 km²34.3% of basin
1 intersecting protected areas
Ozero Dapdary
IUCN IVThe Quiet Zone
113.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
222 distinct species · 775 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Яна : 15 espèces reliées par 22 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
-15,8°C
Annual rain
194mm
Moisture idx (CMI)
-0,58
Runoff
82mm/an
PET
460mm
AET
199mm
Mean slope
8,2°
Water table
122cm
Forest
70%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)