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and receive stormwater from North Arm East, Hindmarsh Enfield Prospect, South Road North Arm West
and Dunstan Road sub-catchments and discharge to North Arm Creek. The Barker Inlet wetlands have
been identified as wetlands of national importance (Australian Nature Conservation Agency 1996).
Gauging stations have been installed at the Northern and Wingfield outlets of the Barker Inlet wetlands
and remain open while gauging stations at the Southern, North Arm East and Hindmarsh Enfield Prospect
inlets have been closed. These gauges were all installed in 2004 and the latter three closed in 2007.The
Range and Magazine Creek wetlands are smaller and receive stormwater from the Torrens Road
Drainage Catchment. They have been designed to act as temporary storage for high tides and flood
conditions.
In addition to the Gillman wetlands, Managed Aquifer Recharge (MAR) schemes have been trialled at
Regent Gardens, Northgate and Ferryden Park, receiving stormwater from the respective developments.
The Ferryden Park system does not store water in a wetland system and only retains water in large storm
events, unlike the Regent Gardens and Northgate systems. MAR schemes have also been implemented
at Grange Golf Course and Royal Adelaide Golf Course reducing stormwater inflows to West Lakes and
the Port River (The Grange Golf Course Inc, 2006; Royal Adelaide Golf Course, 2007).
As part of Stage One of the Water Proofing the West project, 13ha in total of wetlands with MAR schemes
will be implemented at Old Port Road, Cooke Reserve and Riverside Golf Course and Cheltenham. The
project aims to harvest 2400ML/annum of stormwater by 2015 (City of Charles Sturt, undated fact sheet).
There is also an open gauging station at Kirkcaldy Wetland at Nash Street in East Grange which was
installed in 2005.
The 100 ARI flood maps available for the Hindmarsh Enfield Prospect, North Arm East and Torrens Road
Drainage Authority catchments in the Port Adelaide Enfield council area show that large areas of the
suburbs of Port Adelaide, Ottoway, Rosewater, Pennington, Woodville North, West Croydon, Devon Park,
Gepps Cross and the western side of Prospect could potentially be inundated. Other areas at risk of flood
include some areas of Cheltenham, Woodville, Athol Park, Brompton, Croydon, Kilkenny, Gillman,
Mansfield Park and the western side of Wingfield.
Within the Charles Sturt Council area, large areas of Albert Park, Woodville South, Beverley, Semaphore
Park, Royal Park, Seaton, Findon, Henley Beach, Fulham Gardens and Hendon are at risk of flood in a
100 year storm event as well as some areas of West Lakes Shore, Woodville West, and Allenby Gardens.
12.1.1. Climate Change Implications for Catchment Management
There are low lying areas within the Port Adelaide catchment that are lower than that of recorded high
tide levels. These areas face the risk of direct seawater inundation from the Barker Inlet, the coast and
the Port River. Within the Port Road catchment, a significant portion of the catchment has historically
experienced frequent flood inundation (City of Charles Sturt, 2007). As the stormwater network drains to
the sea, the high downstream levels could impact upon the ability of the network to transfer stormwater
out of these areas efficiently causing flooding. The Barker Inlet wetlands management plan state that
during storm events which may reach RL 3.00AHD, the penstock gates are to be closed to prevent
backwater flooding in the inlet drains. (Tonkin Consulting, 2005,
Port Adelaide Seawater Stormwater
Flooding Study
)
