Ontologia

HydroBASINS lev08 watershed · #1081622740

Bassin de Orange River (Oranje)

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 across 2 countries : Luderitz, Namakwa, Oranjemund

Pfafstetter: 12710003

Sub-basin area

198,1km²

Upstream area

883 355,5km²

Discharge

309,5m³/s

Mean elev.

179m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Orange River (Oranje)974 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

158 distinct species · 252 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

252 obs · 5 cellules
Obs. / cellule
≥ 139
139–138
80–138
23–79
< 23

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

Ecological tissue

Sample of 16 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 Orange River (Oranje) : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 3 types (connectance 9.2%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
16
Interactions affichées
11
Connectance
0.092
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°

17,5°C

Annual rain

50mm

Moisture idx (CMI)

-0,96

Runoff

13mm/an

PET

1 328mm

AET

45mm

Mean slope

4,4°

Water table

1 162cm

Forest

0%

Crops

0%

Urban

0%

Protected

51%

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