HydroBASINS lev08 watershed · #1081650800
Bassin de Poortrivier
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, Chris Hani
Sub-basin area
157,8km²
Upstream area
157,8km²
Discharge
0,13m³/s
Mean elev.
1 364m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 157.4 km²99.8% of basin
- 0.3 km²0.2% of basin
1 intersecting protected areas
Commandodrift Nature Reserve
IUCN Not ReportedNature Reserve
4.69 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
25 distinct species · 25 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 4 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 Poortrivier : 4 espèces reliées par 2 interactions GloBI sur 1 type (connectance 33.3%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
13,9°C
Annual rain
528mm
Moisture idx (CMI)
-0,61
Runoff
26mm/an
PET
1 362mm
AET
449mm
Mean slope
10,7°
Water table
887cm
Forest
0%
Crops
0%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)