West Beach is subject to higher erosion pressures than nearby beaches, with estimated annual sand losses of up to 100,000m3. The beach originally received around 60,000m3 of sand each year from the Adelaide sand pumping system, however this was not sufficient to address the speed of the erosion. After a storm event exposed a sand pumping pipeline, 100,000m3 was carted from the nearby Semaphore South breakwater over 2018-2019. An additional 500,000m3 of sand is being carted for the 2019-2023 period at the cost of $20m, and a new sand pipeline to continually pump sand from the Semaphore South breakwater is being built at a cost of $28.4m. Some dune restoration works are also being undertaken in association with local councils and community groups, including dune construction, stabilisation with jute mesh and revegetation.
Beach renourishment
Method: Artificially nourished
Sand source: Quarry, Same sediment compartment
Sand volume (m2): 100,000 in 2018-2019; 500,000 over 2019-2023
Sand placement: Dune area
Date of first renourishment: 2013
Date of last renourishment: 2022
Dune replanting or construction
Method: Revegetation, Mechanical reconstruction, Rehabilitation
Rehabilitation - method: Artificial stabilisation with jute mesh
Revegetation - species: Coastal spinifex
Approach
Beach renourishment, Dune replanting or construction
Geographic context
Bay
Organisation responsible
SA Department for Environment and Water
Primary objective
Coastal protection
Coastal hazard
Erosion
Asset vulnerable
Built
Length of coastline targeted (m)
500
Area of project (ha)
1.5
Date of completion
Ongoing since 2018
Cost ($AUD)
$48.4 million
Source of project funding
State government
Project approvals needed
State
West Beach sand carting is underway – Environment SA News
Long-term plan to manage West Beach announced – Environment SA News
West Beach dune restoration project – SA Department for Environment and Water
Project images © SA Department for Environment and Water 2022