HydroBASINS lev08 watershed · #1081642560
Bassin de Swartdoring
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 : Namakwa, West Coast
Sub-basin area
432,4km²
Upstream area
2 355km²
Discharge
0,5m³/s
Mean elev.
408m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1081641860605 km²
- Bassin · #1081641880341 km²
2 dept-equivalent regions (GADM L2)
- 316.2 km²73.2% of basin
- 115.7 km²26.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
428 distinct species · 1 156 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 52 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 Swartdoring : 35 espèces reliées par 58 interactions GloBI sur 5 types (connectance 4.4%, filtre Serrano α=0.2). 17 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°
17,9°C
Annual rain
180mm
Moisture idx (CMI)
-0,89
Runoff
6mm/an
PET
1 587mm
AET
152mm
Mean slope
6,8°
Water table
966cm
Forest
2%
Crops
2%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)