Ontologia

HydroBASINS lev08 watershed · #1081608480

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 3 administrative regions : Dr Kenneth Kaunda, Fezile Dabi, Sedibeng

Pfafstetter: 12797910

Sub-basin area

2 511,8km²

Upstream area

49 684,8km²

Discharge

75,19m³/s

Mean elev.

1 451m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Vaal River239 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

9 intersecting protected areas

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

Species present

1 902 distinct species · 149 289 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

149 289 obs · 62 cellules
Obs. / cellule
≥ 19 146
6 367–19 145
2 097–6 366
1 323–2 096
< 1 323

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

Ecological tissue

Sample of 23 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 : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 16 interactions GloBI sur 3 types (connectance 6.3%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
16
Connectance
0.063
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°

16,5°C

Annual rain

644mm

Moisture idx (CMI)

-0,57

Runoff

15mm/an

PET

1 515mm

AET

545mm

Mean slope

2,2°

Water table

482cm

Forest

2%

Crops

52%

Urban

1%

Protected

1%

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