HydroBASINS lev08 watershed · #1080014570
Bassin de Storms 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 : Cacadu, Eden
Sub-basin area
1 569,2km²
Upstream area
1 569,2km²
Discharge
0,32m³/s
Mean elev.
293m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 1314.0 km²83.8% of basin
- 218.6 km²13.9% of basin
26 intersecting protected areas
Cape Floral Region Protected Areas
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
554.86 km² overlap
Garden Route National Park
IUCN Not ReportedNational Park
119.42 km² overlap
Tsitsikamma Marine Protected Area
IUCN Not ReportedMarine Protected Area
13.66 km² overlap
Rebelsrus Private Nature Reserve
IUCN Not ReportedNature Reserve
3.97 km² overlap
Huisklip Nature Reserve
IUCN Not ReportedNature Reserve
3.18 km² overlap
Thula Moya Nature Reserve
IUCN Not ReportedNature Reserve
2.92 km² overlap
Buitenverwachting Private Nature Reserve
IUCN Not ReportedNature Reserve
2.48 km² overlap
Mostertshoek Nature Reserve
IUCN Not ReportedNature Reserve
1.36 km² overlap
Sand River Private Nature Reserve
IUCN Not ReportedNature Reserve
1.36 km² overlap
17 more protected areassorted by overlap area
Brackenburn Private Nature Reserve
IUCN Not ReportedNature Reserve
0.91 km² overlap
Whiskey Creek Nature Reserve
IUCN Not ReportedForest Nature Reserve
0.83 km² overlap
Oyster Bay Private Nature Reserve
IUCN Not ReportedNature Reserve
0.80 km² overlap
Irma Booysen Flora Reserve
IUCN Not ReportedNature Reserve
0.65 km² overlap
The Gums Private Nature Reserve
IUCN Not ReportedNature Reserve
0.62 km² overlap
Kiaruna Private Nature Reserve
IUCN Not ReportedNature Reserve
0.54 km² overlap
Annex Arch Rock Private Nature Reserve
IUCN Not ReportedNature Reserve
0.54 km² overlap
Oubos-Grootrivier Nature Reserve
IUCN Not ReportedNature Reserve
0.49 km² overlap
Blouberg Protea Nature Reserve
IUCN Not ReportedNature Reserve
0.39 km² overlap
Cape St. Francis Provincial Nature Reserve
IUCN Not ReportedNature Reserve
0.36 km² overlap
Rivendell Private Nature Reserve
IUCN Not ReportedNature Reserve
0.24 km² overlap
St Francis Sands Nature Reserve
IUCN Not ReportedNature Reserve
0.23 km² overlap
Olisshof Private Nature Reserve
IUCN Not ReportedNature Reserve
0.22 km² overlap
Rebels Nature Reserve
IUCN Not ReportedNature Reserve
0.21 km² overlap
Hog Hollow Private Nature Reserve
IUCN Not ReportedNature Reserve
0.12 km² overlap
Keurbooms River Nature Reserve
IUCN Not ReportedNature Reserve
0.07 km² overlap
Franscois and Annelle Marits Private Nature Reserve
IUCN Not ReportedNature Reserve
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 988 distinct species · 154 357 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Storms River : 24 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 19 interactions GloBI sur 3 types (connectance 5.0%, 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°
15,7°C
Annual rain
939mm
Moisture idx (CMI)
-0,15
Runoff
123mm/an
PET
1 102mm
AET
794mm
Mean slope
8,9°
Water table
635cm
Forest
52%
Crops
7%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)