HydroBASINS lev08 watershed · #1081615040
Bassin de Gamagara
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 : John Taolo Gaetsewe, Siyanda
Sub-basin area
388,5km²
Upstream area
3 805,3km²
Discharge
1,85m³/s
Mean elev.
1 202m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1081615940281 km²
- Bassin de Gamagara186 km²
2 dept-equivalent regions (GADM L2)
- 270.7 km²69.8% of basin
- 117.2 km²30.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
217 distinct species · 1 101 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 Gamagara : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 14 interactions GloBI sur 2 types (connectance 7.4%, 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°
18,5°C
Annual rain
353mm
Moisture idx (CMI)
-0,79
Runoff
16mm/an
PET
1 660mm
AET
298mm
Mean slope
1,7°
Water table
365cm
Forest
0%
Crops
0%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)