HydroBASINS lev08 watershed · #5080056640
Bassin de Oakabella 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 3 administrative regions : Chapman Valley, Geraldton-Greenough, Northampton
Sub-basin area
294,5km²
Upstream area
294,5km²
Discharge
0,58m³/s
Mean elev.
92m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 133.8 km²45.5% of basin
- 123.6 km²42.0% of basin
- 26.7 km²9.1% of basin
7 intersecting protected areas
Unnamed WA51376
IUCN IIIConservation Park
4.84 km² overlap
Oakajee
IUCN IaNature Reserve
1.24 km² overlap
Wokatherra
IUCN IaNature Reserve
1.12 km² overlap
Howatharra
IUCN IaNature Reserve
0.29 km² overlap
Howatharra
IUCN IaNature Reserve
0.28 km² overlap
Oakabella
IUCN IaNature Reserve
0.28 km² overlap
Nilligarri
IUCN IaNature Reserve
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 271 distinct species · 9 105 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Oakabella River : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 35 interactions GloBI sur 3 types (connectance 5.6%, filtre Serrano α=0.2). 10 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°
19,6°C
Annual rain
491mm
Moisture idx (CMI)
-0,68
Runoff
63mm/an
PET
1 537mm
AET
416mm
Mean slope
2,9°
Water table
532cm
Forest
0%
Crops
60%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)