HydroBASINS lev08 watershed · #4080454910
Bassin de 冷口沙河
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 : Chengde, Qinhuangdao, Tangshan
Sub-basin area
783,7km²
Upstream area
783,9km²
Discharge
3,1m³/s
Mean elev.
300m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 588.6 km²75.0% of basin
- 192.3 km²24.5% of basin
- 3.7 km²0.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
23 distinct species · 44 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 12 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 冷口沙河 : 12 espèces reliées par 10 interactions GloBI sur 2 types (connectance 15.2%, 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°
9,2°C
Annual rain
686mm
Moisture idx (CMI)
-0,31
Runoff
123mm/an
PET
997mm
AET
585mm
Mean slope
9,7°
Water table
404cm
Forest
50%
Crops
20%
Urban
21%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)