HydroBASINS lev08 watershed · #1081525830
Bassin de Omatako
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 : Okakarara, Omatako
Sub-basin area
2 290km²
Upstream area
2 290,5km²
Discharge
0,83m³/s
Mean elev.
1 480m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 2235.9 km²97.9% of basin
- 47.9 km²2.1% of basin
1 intersecting protected areas
Ozonahi
IUCN Not ReportedCommunal Conservancy
44.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
379 distinct species · 1 580 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 Omatako : 16 espèces reliées par 20 interactions GloBI sur 2 types (connectance 9.5%, filtre Serrano α=0.2). 5 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°
19,5°C
Annual rain
405mm
Moisture idx (CMI)
-0,77
Runoff
12mm/an
PET
1 780mm
AET
341mm
Mean slope
0,1°
Water table
275cm
Forest
0%
Crops
0%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)