HydroBASINS lev08 watershed · #5080054370
Bassin de Ngalibiu 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 34 administrative regions : Aola, Avuavu, Birao, Cruz, Duidui +29
Sub-basin area
5 549km²
Upstream area
5 549km²
Discharge
14,77m³/s
Mean elev.
402m
Administrative coverage
34 dept-equivalent regions (GADM L2)
- 548.9 km²9.9% of basin
- 462.7 km²8.4% of basin
- 391.6 km²7.1% of basin
- 372.4 km²6.7% of basin
- 337.6 km²6.1% of basin
- 335.4 km²6.1% of basin
- 319.3 km²5.8% of basin
- 256.1 km²4.6% of basin
26 moreFull L2 list
- Birao254.4 km² · 4.6%
- Wanderer Bay254.0 km² · 4.6%
- Valasi247.7 km² · 4.5%
- Saghalu227.6 km² · 4.1%
- East Tasimboko179.7 km² · 3.3%
- Aola169.4 km² · 3.1%
- Paripao165.1 km² · 3.0%
- Savulei161.3 km² · 2.9%
- Talise153.1 km² · 2.8%
- Longgu129.9 km² · 2.4%
- Vatukulau122.1 km² · 2.2%
- Moli121.7 km² · 2.2%
- West Ghaobata84.6 km² · 1.5%
- East Ghaobata72.6 km² · 1.3%
- Panatina7.4 km² · 0.1%
- Kola'a5.0 km² · 0.1%
- Nggosi4.3 km² · 0.1%
- Vura2.3 km² · 0.0%
- Vavaea1.8 km² · 0.0%
- Rove - Lengakiki1.2 km² · 0.0%
- Mbumburu1.2 km² · 0.0%
- Mataniko0.9 km² · 0.0%
- Kukum0.4 km² · 0.0%
- Cruz0.4 km² · 0.0%
- Vuhokesa0.4 km² · 0.0%
- Naha0.2 km² · 0.0%
1 intersecting protected areas
Kere hira/Niuhoa
IUCN Not AssignedMarine Managed Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 407 distinct species · 20 839 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Ngalibiu River : 23 espèces reliées par 20 interactions GloBI sur 2 types (connectance 6.2%, filtre Serrano α=0.2). 3 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°
24,5°C
Annual rain
2 645mm
Moisture idx (CMI)
0,45
Runoff
1 125mm/an
PET
1 432mm
AET
1 412mm
Mean slope
14,6°
Water table
477cm
Forest
52%
Crops
1%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)