HydroBASINS lev08 watershed · #1081659700
Bassin de Gourits 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
628,5km²
Upstream area
30 128,6km²
Discharge
25,07m³/s
Mean elev.
441m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Olifantsrivier2594 km²
- Bassin de Gamka River1385 km²
1 dept-equivalent regions (GADM L2)
- 628.3 km²100.0% of basin
6 intersecting protected areas
Cape Floral Region Protected Areas
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
68.23 km² overlap
Attakwaskloof Nature Reserve
IUCN Not ReportedForest Nature Reserve
50.12 km² overlap
Jakkalsdans Nature Reserve
IUCN Not ReportedNature Reserve
43.10 km² overlap
Gamka Mountain Provincial Nature Reserve
IUCN Not ReportedNature Reserve
21.13 km² overlap
Vaalhoek Provincial Nature Reserve
IUCN Not ReportedNature Reserve
13.37 km² overlap
Towerland Wilderness Nature Reserve
IUCN Not ReportedNature Reserve
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 266 distinct species · 8 361 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 Gourits River : 27 espèces reliées par 37 interactions GloBI sur 4 types (connectance 5.6%, filtre Serrano α=0.2). 10 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°
16,0°C
Annual rain
359mm
Moisture idx (CMI)
-0,73
Runoff
35mm/an
PET
1 360mm
AET
306mm
Mean slope
11,7°
Water table
972cm
Forest
6%
Crops
3%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)