Ontologia

HydroBASINS lev08 watershed · #1081620360

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 Ruth Segomotsi Mompati, Frances Baard, Lejweleputswa

5% lakePfafstetter: 12795035

Sub-basin area

589,9km²

Upstream area

112 324,5km²

Discharge

116,68m³/s

Mean elev.

1 248m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Vaal River421 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

367 distinct species · 3 126 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 126 obs · 13 cellules
Obs. / cellule
≥ 961
807–960
246–806
117–245
< 117

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

Ecological tissue

Sample of 28 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 : 21 espèces reliées par 32 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
32
Connectance
0.079
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°

17,3°C

Annual rain

460mm

Moisture idx (CMI)

-0,72

Runoff

27mm/an

PET

1 641mm

AET

388mm

Mean slope

0,4°

Water table

413cm

Forest

0%

Crops

52%

Urban

0%

Protected

0%

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