Ontologia

HydroBASINS lev08 watershed · #1081607190

Bassin de Vaal River

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 : Fezile Dabi, Sedibeng

2% lakePfafstetter: 12797930

Sub-basin area

301,7km²

Upstream area

46 032,2km²

Discharge

72,34m³/s

Mean elev.

1 467m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Vaal River2512 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

1 325 distinct species · 159 343 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

159 343 obs · 9 cellules
Obs. / cellule
≥ 87 211
87 211–87 210
18 209–87 210
9 522–18 208
< 9 522

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

Ecological tissue

Sample of 20 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 Vaal River : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 14 interactions GloBI sur 3 types (connectance 7.4%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
14
Connectance
0.074
Patrimoniales
1
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°

16,6°C

Annual rain

657mm

Moisture idx (CMI)

-0,57

Runoff

18mm/an

PET

1 513mm

AET

556mm

Mean slope

1,0°

Water table

304cm

Forest

0%

Crops

27%

Urban

22%

Protected

0%

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