HydroBASINS lev08 watershed · #4081021680
Bassin de Sông Cầu
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 8 administrative regions : Hiệp Hòa, Phú Bình, Phổ Yên, Sông Công, Thái Nguyên +3
Sub-basin area
545,8km²
Upstream area
3 545,1km²
Discharge
84,68m³/s
Mean elev.
47m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sông Đèo Khế188 km²
- Bassin de Sông Cầu91 km²
8 dept-equivalent regions (GADM L2)
- 199.1 km²36.6% of basin
- 133.0 km²24.4% of basin
- Thái NguyênThái Nguyên · Vietnam72.0 km²13.2% of basin
- 62.3 km²11.4% of basin
- 46.9 km²8.6% of basin
- 30.6 km²5.6% of basin
- 0.3 km²0.1% of basin
- 0.1 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
44 distinct species · 55 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 13 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 Cầu : 11 espèces reliées par 9 interactions GloBI sur 3 types (connectance 11.5%, filtre Serrano α=0.2). 2 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°
23,4°C
Annual rain
1 837mm
Moisture idx (CMI)
0,28
Runoff
802mm/an
PET
1 327mm
AET
1 106mm
Mean slope
2,3°
Water table
89cm
Forest
0%
Crops
96%
Urban
28%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)