Ontologia

HydroBASINS lev08 watershed · #1081641450

Bassin de Orange–Fish River Water Tunnel

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 : Joe Gqabi, Xhariep

60% lakePfafstetter: 12780350

Sub-basin area

749,8km²

Upstream area

68 898,8km²

Discharge

165,81m³/s

Mean elev.

1 389m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Orange River1256 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

358 distinct species · 2 711 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 711 obs · 16 cellules
Obs. / cellule
≥ 753
469–752
199–468
95–198
< 95

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

Ecological tissue

Sample of 31 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–Fish River Water Tunnel : 25 espèces reliées par 31 interactions GloBI sur 2 types (connectance 6.2%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
31
Connectance
0.063
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°

15,5°C

Annual rain

440mm

Moisture idx (CMI)

-0,70

Runoff

18mm/an

PET

1 491mm

AET

373mm

Mean slope

2,7°

Water table

428cm

Forest

0%

Crops

1%

Urban

1%

Protected

16%

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