HydroBASINS lev08 watershed · #1081422260
Bassin de Giraúl
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 : Bibala, Humpata
Sub-basin area
800,5km²
Upstream area
800,5km²
Discharge
2,21m³/s
Mean elev.
1 018m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- BibalaNamibe · Angola660.6 km²82.8% of basin
- 137.0 km²17.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
968 distinct species · 5 118 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 48 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 Giraúl : 27 espèces reliées par 90 interactions GloBI sur 5 types (connectance 5.4%, filtre Serrano α=0.2). 31 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°
21,6°C
Annual rain
555mm
Moisture idx (CMI)
-0,65
Runoff
79mm/an
PET
1 586mm
AET
469mm
Mean slope
7,8°
Water table
486cm
Forest
26%
Crops
2%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)