HydroBASINS lev08 watershed · #1080014380
Bassin de Elandsrivier
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, Nelson Mandela Bay
Sub-basin area
2 669,4km²
Upstream area
2 669,4km²
Discharge
0,08m³/s
Mean elev.
257m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- Nelson Mandela Bay1731.5 km²64.9% of basin
- 907.3 km²34.0% of basin
14 intersecting protected areas
Cape Floral Region Protected Areas
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
303.42 km² overlap
Groendal Wilderness Area
IUCN Not ReportedForest Wilderness Area
217.15 km² overlap
Zwartkops Valley Nature Reserve
IUCN Not ReportedNature Reserve
9.59 km² overlap
Nelson Mandela Bay Metropolitan University Private Nature Reserve
IUCN Not ReportedNature Reserve
6.07 km² overlap
Cape Recife Nature Reserve
IUCN Not ReportedNature Reserve
5.60 km² overlap
Addo Elephant Marine Protected Area
IUCN Not ReportedMarine Protected Area
5.26 km² overlap
Royalston Nature Reserve
IUCN Not ReportedNature Reserve
4.14 km² overlap
Uitenhage Nature Reserve
IUCN Not ReportedNature Reserve
3.88 km² overlap
Sardinia Bay Nature Reserve
IUCN Not ReportedNature Reserve
3.19 km² overlap
5 more protected areassorted by overlap area
Van Stadens River Wild Flower Reserve
IUCN Not ReportedNature Reserve
3.00 km² overlap
Sardinia Bay Marine Protected Area
IUCN Not ReportedMarine Protected Area
1.09 km² overlap
Sylvic Nature Reserve
IUCN Not ReportedNature Reserve
0.88 km² overlap
Addo Elephant National Park
IUCN Not ReportedNational Park
0.78 km² overlap
Maitland Mines Nature Reserve
IUCN Not ReportedNature Reserve
0.50 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 427 distinct species · 455 994 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Elandsrivier : 30 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 4 types (connectance 4.7%, filtre Serrano α=0.2). 3 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°
17,1°C
Annual rain
504mm
Moisture idx (CMI)
-0,59
Runoff
66mm/an
PET
1 254mm
AET
430mm
Mean slope
6,5°
Water table
668cm
Forest
70%
Crops
7%
Urban
15%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)