HydroBASINS lev08 watershed · #1081655870
Bassin de Dwyka 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 : Central Karoo
Sub-basin area
1 154,1km²
Upstream area
2 607,2km²
Discharge
0,83m³/s
Mean elev.
686m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #10816545701130 km²
- Bassin de Koedoeskloof324 km²
1 dept-equivalent regions (GADM L2)
- 1153.5 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
569 distinct species · 2 164 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Dwyka River : 32 espèces reliées par 24 interactions GloBI sur 5 types (connectance 4.3%, 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°
16,3°C
Annual rain
149mm
Moisture idx (CMI)
-0,90
Runoff
10mm/an
PET
1 543mm
AET
125mm
Mean slope
3,3°
Water table
949cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)