HydroBASINS lev08 watershed · #1081619580
Bassin de Nuab
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 across 2 countries : Namakwa, Oranjemund
Sub-basin area
314,3km²
Upstream area
880 080,6km²
Discharge
309,41m³/s
Mean elev.
636m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Orange River (Oranje)1059 km²
- Bassin de Fish River242 km²
2 dept-equivalent regions (GADM L2)
- 254.2 km²81.0% of basin
- 59.6 km²19.0% of basin
2 intersecting protected areas
Ai-Ais Hot Springs
IUCN IINational Park
259.48 km² overlap
Richtersveld National Park
IUCN Not ReportedNational Park
59.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
595 distinct species · 2 229 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Nuab : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 18 interactions GloBI sur 3 types (connectance 5.1%, 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°
17,6°C
Annual rain
73mm
Moisture idx (CMI)
-0,95
Runoff
13mm/an
PET
1 463mm
AET
62mm
Mean slope
14,4°
Water table
994cm
Forest
0%
Crops
0%
Urban
0%
Protected
99%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)