HydroBASINS lev08 watershed · #3080220440
Bassin de Нгарка-Вэлояха
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 : Nadym, Nadymskiy rayon
Sub-basin area
266,5km²
Upstream area
48 642,7km²
Discharge
468,83m³/s
Mean elev.
22m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Надым183 km²
- Bassin de Чирча159 km²
2 dept-equivalent regions (GADM L2)
- 261.8 km²97.6% of basin
- 6.5 km²2.4% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
180 distinct species · 392 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Нгарка-Вэлояха : 25 espèces reliées par 69 interactions GloBI sur 5 types (connectance 10.4%, filtre Serrano α=0.2). 12 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°
-6,7°C
Annual rain
448mm
Moisture idx (CMI)
0,24
Runoff
402mm/an
PET
340mm
AET
287mm
Mean slope
1,3°
Water table
19cm
Forest
25%
Crops
0%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)