HydroBASINS lev08 watershed · #5080070990
Bassin de Myall 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 4 administrative regions : Gloucester, Great Lakes, Greater Taree, Port Stephens
Sub-basin area
2 664,6km²
Upstream area
2 664,6km²
Discharge
0,81m³/s
Mean elev.
78m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 1998.0 km²75.0% of basin
- 580.1 km²21.8% of basin
- 33.8 km²1.3% of basin
- 0.6 km²0.0% of basin
30 intersecting protected areas
Myall Lakes
IUCN IINational Park
434.27 km² overlap
Myall Lakes
IUCN Not ReportedWetland of International Importance (Ramsar Site)
403.60 km² overlap
Port Stephens - Great Lakes
IUCN VIMarine Park
80.46 km² overlap
Wallingat
IUCN IINational Park
64.84 km² overlap
Port Stephens - Great Lakes
IUCN IIMarine Park
47.28 km² overlap
Port Stephens - Great Lakes
IUCN IVMarine Park
29.50 km² overlap
Ghin-Doo-Ee
IUCN IINational Park
23.86 km² overlap
Talawahl
IUCN IINature Reserve
22.43 km² overlap
Booti Booti
IUCN IINational Park
15.33 km² overlap
21 more protected areassorted by overlap area
Khappinghat
IUCN IINature Reserve
15.04 km² overlap
Khappinghat
IUCN IINational Park
13.65 km² overlap
Darawank
IUCN IaNature Reserve
12.00 km² overlap
Wallamba
IUCN IINature Reserve
11.47 km² overlap
Karuah
IUCN IINature Reserve
7.03 km² overlap
Wallis Island
IUCN IaNature Reserve
5.87 km² overlap
Minimbah
IUCN IaNature Reserve
3.59 km² overlap
The Glen
IUCN IaNature Reserve
3.02 km² overlap
Coolongolook
IUCN IaNature Reserve
2.03 km² overlap
Port Stephens - Great Lakes
IUCN IIMarine Park
1.78 km² overlap
Corrie Island
IUCN IaNature Reserve
1.74 km² overlap
Bulahdelah
IUCN IIState Conservation Area
1.27 km² overlap
Talawahl
IUCN IIState Conservation Area
1.22 km² overlap
Port Stephens - Great Lakes
IUCN IVMarine Park
1.12 km² overlap
Regatta Island
IUCN IaNature Reserve
1.11 km² overlap
Gir-um-bit
IUCN IINational Park
1.03 km² overlap
Mills Island
IUCN IaNature Reserve
0.58 km² overlap
Yahoo Island
IUCN IaNature Reserve
0.51 km² overlap
Saltwater
IUCN IINational Park
0.33 km² overlap
John Gould
IUCN IVNature Reserve
0.31 km² overlap
Bandicoot Island
IUCN IaNature Reserve
0.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 507 distinct species · 411 555 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Myall River : 24 espèces reliées par 37 interactions GloBI sur 4 types (connectance 8.0%, 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°
17,7°C
Annual rain
1 288mm
Moisture idx (CMI)
0,04
Runoff
343mm/an
PET
1 239mm
AET
992mm
Mean slope
4,9°
Water table
241cm
Forest
96%
Crops
0%
Urban
1%
Protected
27%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)