HydroBASINS lev08 watershed · #1081633750
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 : Pixley ka Seme
Sub-basin area
342,7km²
Upstream area
319 244,2km²
Discharge
293,7m³/s
Mean elev.
1 028m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Orange River308 km²
- Bassin de Brakrivier106 km²
1 dept-equivalent regions (GADM L2)
- 342.3 km²100.0% of basin
1 intersecting protected areas
De Zilverstroom Protected Environment
IUCN Not ReportedProtected Environment
9.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
169 distinct species · 419 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 : 27 espèces reliées par 24 interactions GloBI sur 2 types (connectance 5.5%, filtre Serrano α=0.2). 3 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°
18,6°C
Annual rain
262mm
Moisture idx (CMI)
-0,84
Runoff
16mm/an
PET
1 669mm
AET
220mm
Mean slope
2,8°
Water table
624cm
Forest
0%
Crops
2%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)