HydroBASINS lev08 watershed · #3080408080
Bassin de Ларьёган
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 4 administrative regions : Aleksandrovskiy rayon, Kargasokskiy rayon, Nizhnevartovskiy rayon, Surgutskiy rayon
Sub-basin area
3 503,2km²
Upstream area
3 503,4km²
Discharge
19,53m³/s
Mean elev.
81m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Aleksandrovskiy rayonTomsk · Russia3475.0 km²98.6% of basin
- 26.0 km²0.7% of basin
- Kargasokskiy rayonTomsk · Russia13.0 km²0.4% of basin
- 8.8 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
47 distinct species · 75 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 8 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 Ларьёган : 8 espèces reliées par 5 interactions GloBI sur 3 types (connectance 17.9%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
-2,2°C
Annual rain
528mm
Moisture idx (CMI)
-0,03
Runoff
150mm/an
PET
547mm
AET
419mm
Mean slope
1,7°
Water table
16cm
Forest
88%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)