HydroBASINS lev08 watershed · #1080014130
Bassin de Keiskammarivier
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 : Amathole, Buffalo City
Sub-basin area
2 707,3km²
Upstream area
2 707,5km²
Discharge
11,53m³/s
Mean elev.
548m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 2595.4 km²95.9% of basin
- Buffalo City109.9 km²4.1% of basin
2 intersecting protected areas
Lennox Sebe Game Reserve
IUCN Not ReportedNature Reserve
85.03 km² overlap
Auckland Nature Reserve
IUCN Not ReportedForest Nature Reserve
2.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 196 distinct species · 76 823 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Keiskammarivier : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 19 interactions GloBI sur 4 types (connectance 6.3%, 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°
17,3°C
Annual rain
670mm
Moisture idx (CMI)
-0,49
Runoff
132mm/an
PET
1 337mm
AET
568mm
Mean slope
7,3°
Water table
520cm
Forest
70%
Crops
15%
Urban
1%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)