Ontologia

HydroBASINS lev08 watershed · #1081623270

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 : Frances Baard, Lejweleputswa

3% lakePfafstetter: 12795010

Sub-basin area

1 634,6km²

Upstream area

117 398,2km²

Discharge

125,47m³/s

Mean elev.

1 146m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Vaal River144 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

1 205 distinct species · 36 010 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

36 010 obs · 42 cellules
Obs. / cellule
≥ 6 499
3 396–6 498
527–3 395
184–526
< 184

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

Ecological tissue

Sample of 17 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 : 15 espèces reliées par 13 interactions GloBI sur 3 types (connectance 9.6%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
17
Interactions affichées
13
Connectance
0.096
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°

18,2°C

Annual rain

434mm

Moisture idx (CMI)

-0,74

Runoff

32mm/an

PET

1 683mm

AET

366mm

Mean slope

0,8°

Water table

447cm

Forest

0%

Crops

1%

Urban

5%

Protected

1%

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