HydroBASINS lev08 watershed · #3080378450
Bassin de Нанкъёган
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 3 administrative regions : Nizhnevartovskiy rayon, Pokachi, Surgutskiy rayon
Sub-basin area
3 170,4km²
Upstream area
29 962,7km²
Discharge
289,39m³/s
Mean elev.
53m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Аган4107 km²
- Bassin de Ватьёган1078 km²
3 dept-equivalent regions (GADM L2)
- 1871.8 km²58.7% of basin
- 1264.0 km²39.6% of basin
- 53.5 km²1.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
190 distinct species · 489 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Нанкъёган : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 60 interactions GloBI sur 4 types (connectance 10.7%, filtre Serrano α=0.2). 9 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°
-3,4°C
Annual rain
549mm
Moisture idx (CMI)
0,14
Runoff
316mm/an
PET
473mm
AET
382mm
Mean slope
2,5°
Water table
22cm
Forest
27%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)