HydroBASINS lev08 watershed · #1081631410
Bassin de Riet 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 : Xhariep
Sub-basin area
594,6km²
Upstream area
11 651,6km²
Discharge
7,68m³/s
Mean elev.
1 215m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1081631970170 km²
- Bassin de Riet River140 km²
1 dept-equivalent regions (GADM L2)
- 593.8 km²100.0% of basin
1 intersecting protected areas
Middelfontein Game Reserve
IUCN Not ReportedNature Reserve
6.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
288 distinct species · 1 171 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Riet River : 21 espèces reliées par 24 interactions GloBI sur 4 types (connectance 7.4%, 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°
17,6°C
Annual rain
414mm
Moisture idx (CMI)
-0,74
Runoff
27mm/an
PET
1 611mm
AET
349mm
Mean slope
1,0°
Water table
365cm
Forest
0%
Crops
8%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)