HydroBASINS lev08 watershed · #4080669300
Bassin de 两河
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 : Longnan, Mianyang, Ngawa Tibetan and Qiang
Sub-basin area
643,2km²
Upstream area
643,2km²
Discharge
6,86m³/s
Mean elev.
2 782m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 641.7 km²99.8% of basin
- 1.1 km²0.2% of basin
- 0.2 km²0.0% of basin
2 intersecting protected areas
Jin Zhai Gou
IUCN VIScenic Area
4.72 km² overlap
Jiuzhaigou Valley Scenic and Historic Interest Area
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
2.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
308 distinct species · 1 118 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 两河 : 13 espèces reliées par 20 interactions GloBI sur 3 types (connectance 10.5%, 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°
5,8°C
Annual rain
730mm
Moisture idx (CMI)
-0,20
Runoff
336mm/an
PET
926mm
AET
616mm
Mean slope
29,4°
Water table
1 036cm
Forest
90%
Crops
3%
Urban
0%
Protected
42%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)