Ontologia

HydroBASINS lev08 watershed · #1081607130

Bassin de Rietspruit

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 : City of Johannesburg, Sedibeng, West Rand

5% lakePfafstetter: 12797920

Sub-basin area

1 141km²

Upstream area

1 141km²

Discharge

0,93m³/s

Mean elev.

1 541m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Vaal River2512 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

1 035 distinct species · 62 671 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

62 671 obs · 30 cellules
Obs. / cellule
≥ 11 796
8 328–11 795
2 151–8 327
1 418–2 150
< 1 418

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 Rietspruit : 21 espèces reliées par 18 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
18
Connectance
0.071
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°

16,2°C

Annual rain

678mm

Moisture idx (CMI)

-0,54

Runoff

25mm/an

PET

1 484mm

AET

574mm

Mean slope

1,3°

Water table

567cm

Forest

0%

Crops

38%

Urban

19%

Protected

0%

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