HydroBASINS lev08 watershed · #5080056630
Bassin de Chapman 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
1 952,1km²
Upstream area
1 952,1km²
Discharge
3,38m³/s
Mean elev.
220m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 1553.6 km²79.7% of basin
- 312.9 km²16.1% of basin
- 82.6 km²4.2% of basin
8 intersecting protected areas
Unnamed WA51376
IUCN IIIConservation Park
2.64 km² overlap
Unnamed WA51375
IUCN IaNature Reserve
2.07 km² overlap
Bella Vista
IUCN IaNature Reserve
0.69 km² overlap
Protheroe
IUCN IaNature Reserve
0.68 km² overlap
Unnamed WA17233
IUCN IaNature Reserve
0.24 km² overlap
Cutubury
IUCN IaNature Reserve
0.15 km² overlap
Howatharra
IUCN IaNature Reserve
0.14 km² overlap
Wokatherra
IUCN IaNature Reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 333 distinct species · 8 595 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Chapman River : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 35 interactions GloBI sur 3 types (connectance 5.0%, filtre Serrano α=0.2). 7 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°
19,4°C
Annual rain
460mm
Moisture idx (CMI)
-0,71
Runoff
54mm/an
PET
1 570mm
AET
389mm
Mean slope
1,4°
Water table
505cm
Forest
0%
Crops
81%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)