HydroBASINS lev08 watershed · #4080739420
Bassin de 西江河
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 2 administrative regions : Chengdu, Ngawa Tibetan and Qiang
Sub-basin area
1 442,6km²
Upstream area
1 442,6km²
Discharge
25,36m³/s
Mean elev.
586m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1236.2 km²85.8% of basin
- 205.1 km²14.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 253 distinct species · 30 915 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 西江河 : 31 espèces reliées par 41 interactions GloBI sur 4 types (connectance 5.5%, filtre Serrano α=0.2). 8 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°
16,1°C
Annual rain
979mm
Moisture idx (CMI)
-0,06
Runoff
563mm/an
PET
1 042mm
AET
785mm
Mean slope
2,5°
Water table
87cm
Forest
9%
Crops
63%
Urban
57%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)