HydroBASINS lev08 watershed · #4080014830
Bassin de Sông Đá Bạc
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 6 administrative regions : Kinh Môn, Lục Nam, Sơn Động, Thuỷ Nguyên, Uông Bí +1
Sub-basin area
360,1km²
Upstream area
360,3km²
Discharge
7,9m³/s
Mean elev.
117m
Administrative coverage
6 dept-equivalent regions (GADM L2)
1 intersecting protected areas
Tay Yen Tu
IUCN IVNature Reserve
12.43 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
41 distinct species · 58 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 6 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 Đá Bạc : 6 espèces reliées par 3 interactions GloBI sur 2 types (connectance 20.0%, 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°
23,3°C
Annual rain
1 709mm
Moisture idx (CMI)
0,27
Runoff
700mm/an
PET
1 240mm
AET
1 030mm
Mean slope
7,4°
Water table
292cm
Forest
3%
Crops
16%
Urban
26%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)