Ontologia

HydroBASINS lev08 watershed · #4081015390

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 4 administrative regions : Phú Lương, Thái Nguyên, Võ Nhai, Đồng Hỷ

Pfafstetter: 43670895

Sub-basin area

139,3km²

Upstream area

2 343,2km²

Discharge

54,07m³/s

Mean elev.

106m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Cầu91 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

1 intersecting protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

56 distinct species · 174 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

174 obs · 4 cellules
Obs. / cellule
≥ 165
165–164
5–164
5–4
< 5

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 5 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Sông Cầu : 4 espèces reliées par 5 interactions GloBI sur 3 types (connectance 50.0%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
5
Interactions affichées
5
Connectance
0.500
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

23,0°C

Annual rain

1 885mm

Moisture idx (CMI)

0,29

Runoff

826mm/an

PET

1 336mm

AET

1 113mm

Mean slope

6,8°

Water table

196cm

Forest

1%

Crops

93%

Urban

1%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)