HydroBASINS lev08 watershed · #1081626330
Bassin de Orange 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 1 administrative regions : Siyanda
Sub-basin area
413km²
Upstream area
335 598,7km²
Discharge
304,75m³/s
Mean elev.
923m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Orange River264 km²
- Bassin de Orange River119 km²
1 dept-equivalent regions (GADM L2)
- 412.5 km²100.0% of basin
1 intersecting protected areas
Kalahari Oryx Nature Reserve
IUCN Not ReportedNature Reserve
4.58 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
345 distinct species · 2 865 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Orange River : 26 espèces reliées par 24 interactions GloBI sur 4 types (connectance 6.3%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
19,6°C
Annual rain
226mm
Moisture idx (CMI)
-0,87
Runoff
15mm/an
PET
1 701mm
AET
189mm
Mean slope
1,8°
Water table
582cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)