HydroBASINS lev08 watershed · #1081624330
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
2 295,5km²
Upstream area
428 259,7km²
Discharge
312,52m³/s
Mean elev.
809m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Orange River2416 km²
- Bassin de Hartebeesrivier475 km²
1 dept-equivalent regions (GADM L2)
- 2292.4 km²100.0% of basin
1 intersecting protected areas
Augrabies Falls National Park
IUCN Not ReportedNational Park
121.32 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 138 distinct species · 46 478 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Orange River : 26 espèces reliées par 32 interactions GloBI sur 2 types (connectance 6.9%, filtre Serrano α=0.2). 5 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°
19,5°C
Annual rain
184mm
Moisture idx (CMI)
-0,90
Runoff
11mm/an
PET
1 772mm
AET
154mm
Mean slope
1,3°
Water table
780cm
Forest
0%
Crops
0%
Urban
2%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)