HydroBASINS lev08 watershed · #4080830210
Bassin de 孙科西河
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 across 2 countries : Bagmati, Janakpur, Shigatse
Sub-basin area
286,6km²
Upstream area
1 875,6km²
Discharge
68,37m³/s
Mean elev.
4 419m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Phu Chu377 km²
- Bassin de 孙科西河349 km²
3 dept-equivalent regions (GADM L2)
- 281.8 km²98.5% of basin
- 4.2 km²1.5% of basin
- 0.2 km²0.1% of basin
2 intersecting protected areas
Gauri-Shankar
IUCN VIConservation Area
3.74 km² overlap
Langtang
IUCN IINational Park
0.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
369 distinct species · 1 550 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 孙科西河 : 10 espèces reliées par 15 interactions GloBI sur 3 types (connectance 11.0%, 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°
1,2°C
Annual rain
553mm
Moisture idx (CMI)
-0,30
Runoff
1 183mm/an
PET
759mm
AET
450mm
Mean slope
28,8°
Water table
848cm
Forest
38%
Crops
1%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)