HydroBASINS lev08 watershed · #4080857280
Bassin de 沅水
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 : Huaihua, Qiandongnan Miao and Dong
Sub-basin area
2 588,9km²
Upstream area
17 734,6km²
Discharge
292,26m³/s
Mean elev.
533m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 亮江1681 km²
- Bassin de 沅水19 km²
2 dept-equivalent regions (GADM L2)
- 1904.0 km²73.7% of basin
- 680.5 km²26.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
344 distinct species · 570 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 沅水 : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 2 types (connectance 8.1%, 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°
16,1°C
Annual rain
1 239mm
Moisture idx (CMI)
0,09
Runoff
557mm/an
PET
1 132mm
AET
1 006mm
Mean slope
12,6°
Water table
455cm
Forest
66%
Crops
10%
Urban
4%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)