HydroBASINS lev08 watershed · #1081627970
Bassin de Modder 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 2 administrative regions : Mangaung, Xhariep
Sub-basin area
2 222,8km²
Upstream area
2 222,8km²
Discharge
2,56m³/s
Mean elev.
1 340m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Mangaung1443.0 km²65.0% of basin
- 776.9 km²35.0% of basin
8 intersecting protected areas
Chesas Peak Private Nature Reserve
IUCN Not ReportedNature Reserve
22.34 km² overlap
Oliewenberg Reserve
IUCN Not ReportedNature Reserve
11.99 km² overlap
Highlands Reserve
IUCN Not ReportedNature Reserve
10.32 km² overlap
De Oudekraal Nature Reserve
IUCN Not ReportedNature Reserve
5.90 km² overlap
Rooikraal Game Ranch
IUCN Not ReportedNature Reserve
3.95 km² overlap
Koppiesdam Game Reserve
IUCN Not ReportedNature Reserve
2.86 km² overlap
Olievenkloof Private Nature Reserve
IUCN Not ReportedNature Reserve
0.82 km² overlap
Phakwe Restcamp
IUCN Not ReportedNature Reserve
0.79 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
662 distinct species · 66 619 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 Modder River : 13 espèces reliées par 10 interactions GloBI sur 3 types (connectance 11.0%, 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°
16,4°C
Annual rain
487mm
Moisture idx (CMI)
-0,69
Runoff
28mm/an
PET
1 552mm
AET
412mm
Mean slope
0,8°
Water table
392cm
Forest
0%
Crops
66%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)