HydroBASINS lev08 watershed · #1080015050
Bassin · #1080015050
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 : Overberg
Sub-basin area
318,1km²
Upstream area
318,1km²
Discharge
0,07m³/s
Mean elev.
25m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 308.2 km²96.9% of basin
6 intersecting protected areas
De Mond
IUCN IVWetland of International Importance (Ramsar Site)
3.83 km² overlap
Cape Floral Region Protected Areas
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
3.68 km² overlap
De Mond Nature Reserve
IUCN Not ReportedForest Nature Reserve
3.49 km² overlap
De Hoop Marine Protected Area
IUCN Not ReportedMarine Protected Area
2.76 km² overlap
De Hoop Nature Reserve
IUCN Not ReportedNature Reserve
0.27 km² overlap
Heuningnes River Private Nature Reserve
IUCN Not ReportedNature Reserve
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 039 distinct species · 30 173 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 · #1080015050 : 17 espèces reliées par 22 interactions GloBI sur 3 types (connectance 8.7%, filtre Serrano α=0.2). 6 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°
17,4°C
Annual rain
510mm
Moisture idx (CMI)
-0,55
Runoff
64mm/an
PET
1 135mm
AET
437mm
Mean slope
0,9°
Water table
181cm
Forest
35%
Crops
36%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)