HydroBASINS lev08 watershed · #3080125170
Bassin de Раучуа
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 : Bilibinskiy rayon, Chaunskiy rayon
Sub-basin area
2 592,9km²
Upstream area
6 202,7km²
Discharge
25,33m³/s
Mean elev.
484m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Раучуа1967 km²
- Bassin de Номнункувеем1643 km²
2 dept-equivalent regions (GADM L2)
- 2606.9 km²99.8% of basin
- 4.6 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
216 distinct species · 366 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 17 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 Раучуа : 11 espèces reliées par 23 interactions GloBI sur 1 type (connectance 15.0%, 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°
-15,7°C
Annual rain
210mm
Moisture idx (CMI)
-0,34
Runoff
131mm/an
PET
321mm
AET
199mm
Mean slope
11,5°
Water table
224cm
Forest
1%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)