HydroBASINS lev08 watershed · #1081659990
Bassin de Breede 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 2 administrative regions : Cape Winelands, Overberg
Sub-basin area
702,7km²
Upstream area
7 381,3km²
Discharge
44,28m³/s
Mean elev.
284m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Breede River2496 km²
- Bassin de Kogmanskloof River1215 km²
2 dept-equivalent regions (GADM L2)
- 667.5 km²95.0% of basin
- 35.0 km²5.0% of basin
6 intersecting protected areas
Riviersonderend Mountain Catchment Area
IUCN Not ReportedMountain Catchment Area
59.35 km² overlap
Cape Floral Region Protected Areas
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
36.95 km² overlap
Marloth Nature Reserve
IUCN Not ReportedForest Nature Reserve
33.54 km² overlap
Langeberg-Wes Mountain Catchment Area
IUCN Not ReportedMountain Catchment Area
10.36 km² overlap
Vrolijkheid Nature Reserve
IUCN Not ReportedNature Reserve
2.61 km² overlap
Van Loveren Nature Reserve
IUCN Not ReportedNature Reserve
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 478 distinct species · 19 006 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Breede River : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 7 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°
17,0°C
Annual rain
435mm
Moisture idx (CMI)
-0,69
Runoff
62mm/an
PET
1 394mm
AET
370mm
Mean slope
8,0°
Water table
698cm
Forest
15%
Crops
20%
Urban
1%
Protected
15%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)