Physical characteristics
Estuary type: Barrier river
Entrance
location |
Latitude (ºS) |
–35.3 |
Longitude (ºE) |
150.47 |
Catchment area (km2) |
80.9 |
Estuary area (km2) |
1 |
Estuary volume (ML) |
636.4 |
Average depth (m) |
0.7 |
Tidal exchange volume
Tidal exchange volume or tidal prism data is available for this estuary. This tidal prism was measured in 1993.
Tide state |
Flow
(106 m3) |
Local tidal
range (m) |
Sydney Harbour
tidal range (m) |
Ebb flow |
0.32 |
0.94 |
1.1 |
Flood flow |
0.38 |
0.93 |
1.1 |
Notes: km2 = square kilometres; m = metres; m3 = cubic metres; ML = megalitres.
Water depth and survey data
Bathymetric and coastal topography data for this estuary are available in our data portal.
Land use
The catchment of Narrawallee Inlet is moderately disturbed with about 40% of land cleared for grazing. Over half of the catchment is forested, some of which lies in Morton National Park.