HydroBASINS lev08 watershed · #4080984420
Bassin de Sông Gâm
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 : Baise, Bảo Lâm, Bảo Lạc
Sub-basin area
202,8km²
Upstream area
2 980,2km²
Discharge
65,29m³/s
Mean elev.
568m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sông Neo371 km²
- Bassin de Sông Gâm259 km²
3 dept-equivalent regions (GADM L2)
- Bảo LạcCao Bằng · Vietnam191.8 km²94.8% of basin
- 7.9 km²3.9% of basin
- 2.6 km²1.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
25 distinct species · 35 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 7 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 Sông Gâm : 7 espèces reliées par 4 interactions GloBI sur 1 type (connectance 19.0%, 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°
21,0°C
Annual rain
1 457mm
Moisture idx (CMI)
0,10
Runoff
776mm/an
PET
1 309mm
AET
1 043mm
Mean slope
19,0°
Water table
640cm
Forest
8%
Crops
26%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)