HydroBASINS lev08 watershed · #1081587960
Bassin de Steelpoort
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 3 administrative regions : Ehlanzeni, Nkangala, Sekhukhune
Sub-basin area
372,1km²
Upstream area
372,1km²
Discharge
0,81m³/s
Mean elev.
1 789m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 212.8 km²57.3% of basin
- 96.4 km²26.0% of basin
- 62.1 km²16.7% of basin
7 intersecting protected areas
Verloren Valei Nature Reserve
IUCN Not ReportedWetland of International Importance (Ramsar Site)
52.28 km² overlap
Verloren Vallei Nature Reserve
IUCN Not ReportedNature Reserve
34.20 km² overlap
Houtenbek Private Nature Reserve
IUCN Not ReportedNature Reserve
24.29 km² overlap
De Hoop Dam Protected Environment
IUCN Not ReportedProtected Environment
4.15 km² overlap
Tim Tilden-Davis Nature Reserve
IUCN Not ReportedNature Reserve
3.45 km² overlap
De Hoop Private Nature Reserve
IUCN Not ReportedNature Reserve
2.22 km² overlap
Steelpoort Private Nature Reserve
IUCN Not ReportedNature Reserve
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 072 distinct species · 23 268 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 Steelpoort : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 16 interactions GloBI sur 4 types (connectance 5.8%, filtre Serrano α=0.2). 2 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°
14,3°C
Annual rain
848mm
Moisture idx (CMI)
-0,37
Runoff
64mm/an
PET
1 355mm
AET
735mm
Mean slope
7,7°
Water table
606cm
Forest
1%
Crops
17%
Urban
0%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)