HydroBASINS lev08 watershed · #1080015450
Bassin de Verlorenvlei
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 : West Coast
Sub-basin area
1 923,8km²
Upstream area
1 924km²
Discharge
4,67m³/s
Mean elev.
226m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 1922.6 km²100.0% of basin
6 intersecting protected areas
Mountshoek Protected Environment
IUCN Not ReportedProtected Environment
69.97 km² overlap
Winterhoek Mountain Catchment Area
IUCN Not ReportedMountain Catchment Area
30.95 km² overlap
Verlorenvlei
IUCN IIWetland of International Importance (Ramsar Site)
14.43 km² overlap
Tweekuilen Nature Reserve
IUCN Not ReportedNature Reserve
13.35 km² overlap
Banghoek Private Nature Reserve
IUCN Not ReportedNature Reserve
2.95 km² overlap
Skimmelberg Nature Reserve
IUCN Not ReportedNature Reserve
0.67 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 387 distinct species · 55 401 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Verlorenvlei : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 24 interactions GloBI sur 2 types (connectance 5.9%, filtre Serrano α=0.2). 4 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°
17,5°C
Annual rain
348mm
Moisture idx (CMI)
-0,76
Runoff
86mm/an
PET
1 480mm
AET
295mm
Mean slope
5,8°
Water table
651cm
Forest
2%
Crops
32%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)