HydroBASINS lev08 watershed · #5080055950
Bassin de Ngae
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 16 administrative regions : Duff Islands, Fenualoa, Graciosa Bay, Lipe-Temua, Luva Station +11
Sub-basin area
1 048,6km²
Upstream area
1 048,6km²
Discharge
1,67m³/s
Mean elev.
119m
Administrative coverage
16 dept-equivalent regions (GADM L2)
- 253.6 km²24.3% of basin
- 180.0 km²17.2% of basin
- 128.0 km²12.3% of basin
- 76.0 km²7.3% of basin
- 74.7 km²7.2% of basin
- 61.8 km²5.9% of basin
- 27.7 km²2.6% of basin
- 15.5 km²1.5% of basin
8 moreFull L2 list
- Neo15.3 km² · 1.5%
- Polynesian Outer Islands9.5 km² · 0.9%
- Manuopo7.7 km² · 0.7%
- Nipua-Nopoli7.4 km² · 0.7%
- Fenualoa6.3 km² · 0.6%
- Luva Station6.2 km² · 0.6%
- Nenumpo5.0 km² · 0.5%
- Lipe-Temua2.9 km² · 0.3%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
752 distinct species · 4 292 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 Ngae : 17 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 27 interactions GloBI sur 2 types (connectance 10.7%, filtre Serrano α=0.2). 6 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°
26,2°C
Annual rain
4 774mm
Moisture idx (CMI)
0,72
Runoff
1 969mm/an
PET
1 339mm
AET
1 339mm
Mean slope
7,1°
Water table
147cm
Forest
0%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)