HydroBASINS lev08 watershed · #1081650210
Bassin de Great Fish 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 : Chris Hani
Sub-basin area
520,3km²
Upstream area
9 565,6km²
Discharge
3,45m³/s
Mean elev.
1 099m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Great Fish River1714 km²
- Bassin de Great Brak River43 km²
1 dept-equivalent regions (GADM L2)
- 519.9 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
507 distinct species · 15 475 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 Great Fish River : 18 espèces reliées par 15 interactions GloBI sur 3 types (connectance 8.8%, filtre Serrano α=0.2). 1 bulle taxonomique (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
361mm
Moisture idx (CMI)
-0,76
Runoff
8mm/an
PET
1 487mm
AET
306mm
Mean slope
3,9°
Water table
680cm
Forest
0%
Crops
6%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)