HydroBASINS lev08 watershed · #5080558410
Bassin de Avon 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 : Northam, Toodyay, York
Sub-basin area
866km²
Upstream area
77 370,1km²
Discharge
67,72m³/s
Mean elev.
266m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Coolalinga Brook596 km²
- Bassin de Avon River176 km²
3 dept-equivalent regions (GADM L2)
- 541.7 km²62.6% of basin
- 319.5 km²36.9% of basin
- 4.1 km²0.5% of basin
13 intersecting protected areas
Clackline
IUCN IaNature Reserve
4.09 km² overlap
Unnamed WA30393
IUCN Not AssignedOther
3.28 km² overlap
Mokine
IUCN IaNature Reserve
2.89 km² overlap
Wambyn
IUCN IaNature Reserve
2.15 km² overlap
Bobakine
IUCN IaNature Reserve
1.26 km² overlap
Wandoo
IUCN IINational Park
1.24 km² overlap
St. Ronans
IUCN IaNature Reserve
1.18 km² overlap
Conservation Covenant
0.64 km² overlap
Woondowing
IUCN IaNature Reserve
0.54 km² overlap
4 more protected areassorted by overlap area
Warranine
IUCN IaNature Reserve
0.35 km² overlap
Bobakine
IUCN IaNature Reserve
0.30 km² overlap
Nanamoolan
IUCN IaNature Reserve
0.06 km² overlap
Cullen
IUCN IaNature Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 209 distinct species · 94 459 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Avon River : 28 espèces reliées par 36 interactions GloBI sur 3 types (connectance 6.1%, 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°
17,1°C
Annual rain
522mm
Moisture idx (CMI)
-0,65
Runoff
136mm/an
PET
1 502mm
AET
442mm
Mean slope
3,2°
Water table
570cm
Forest
0%
Crops
49%
Urban
1%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)