HydroBASINS lev08 watershed · #1080014700
Bassin de Knysna 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 1 administrative regions : Eden
Sub-basin area
885,8km²
Upstream area
885,8km²
Discharge
1,24m³/s
Mean elev.
315m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 858.3 km²96.9% of basin
24 intersecting protected areas
Garden Route National Park
IUCN Not ReportedNational Park
331.79 km² overlap
Cape Floral Region Protected Areas
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
251.81 km² overlap
Knysna National Lake Area
IUCN Not ReportedProtected Environment
111.77 km² overlap
Church Millwood Nature Reserve
IUCN Not ReportedForest Nature Reserve
64.09 km² overlap
Sinclair Nature Reserve
IUCN Not ReportedForest Nature Reserve
19.07 km² overlap
Goukamma Provincial Nature Reserve
IUCN Not ReportedNature Reserve
15.86 km² overlap
Jubilee Creek Nature Reserve
IUCN Not ReportedForest Nature Reserve
12.25 km² overlap
Lelievlei Nature Reserve
IUCN Not ReportedForest Nature Reserve
10.85 km² overlap
Robberg Coastal Corridor Protected Environment
IUCN Not ReportedProtected Environment
8.46 km² overlap
15 more protected areassorted by overlap area
Wilderness National Lake Area
IUCN Not ReportedProtected Environment
5.61 km² overlap
Ysternek Nature Reserve
IUCN Not ReportedForest Nature Reserve
4.29 km² overlap
Goukamma Marine Protected Area
IUCN Not ReportedMarine Protected Area
4.11 km² overlap
Robberg Marine Protected Area
IUCN Not ReportedMarine Protected Area
2.72 km² overlap
Robberg Nature Reserve
IUCN Not ReportedNature Reserve
1.92 km² overlap
Eastford Private Nature Reserve
IUCN Not ReportedNature Reserve
1.40 km² overlap
Westford Bridge Private Nature Reserve
IUCN Not ReportedNature Reserve
1.09 km² overlap
Lake Pleasant Private Nature Reserve Section No.2
IUCN Not ReportedNature Reserve
0.72 km² overlap
Plettenberg Bay Club Private Nature Reserve
IUCN Not ReportedNature Reserve
0.67 km² overlap
Featherbed Private Nature Reserve
IUCN Not ReportedNature Reserve
0.57 km² overlap
Skuilte Private Nature Reserve
IUCN Not ReportedNature Reserve
0.13 km² overlap
Pledge Nature Reserve
IUCN Not ReportedNature Reserve
0.11 km² overlap
Lake Pleasant Private Nature Reserve Section No.4
IUCN Not ReportedNature Reserve
0.06 km² overlap
Lake Pleasant Private Nature Reserve Section No.5
IUCN Not ReportedNature Reserve
0.05 km² overlap
Brenton Blue Butterfly Nature Reserve
IUCN Not ReportedSpecial Nature Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 343 distinct species · 315 342 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Knysna River : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 26 interactions GloBI sur 3 types (connectance 3.9%, filtre Serrano α=0.2). 5 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°
16,1°C
Annual rain
871mm
Moisture idx (CMI)
-0,23
Runoff
138mm/an
PET
1 135mm
AET
740mm
Mean slope
9,5°
Water table
544cm
Forest
72%
Crops
2%
Urban
6%
Protected
40%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)