The bank of the estuary was experiencing significant erosion and destabilisation. Hardwood logs and hardwood marine piles were installed and riparian vegetation planted to restabilise the bank and encourage a natural system. As of 2021, the bank profile was more natural, there is significant sediment accumulation, mangroves have been naturally establishing, and fauna have begun to use the habitat created. The project has been so successful that the council plans on implementing the same technique in other areas impacted by erosion.
Mangroves
Method: Hybrid, Planting: nursery reared, Supplementary revegetation
Mangrove species: Avicennia marina, Aegiceras corniculatum
Planting density: 7100 total plants over 450m of foreshore
Hybrid structure: Hardwood tree logs with root balls
Approach
Mangroves
Geographic context
Estuary
Organisation responsible
City of Gold Coast, Riparian Engineering Pty ltd.
Primary objective
Coastal protection
Coastal hazard
Erosion
Asset vulnerable
Built, Recreational, Natural
Length of coastline targeted (m)
450
Date of completion
2018
Cost ($AUD)
$1.1 million
Source of project funding
Local government
Project approvals needed
State, Local
Damian Leeding Waterways Foreshore Stabilisation Project
Contact City of Gold Coast for more information about this project.
Project details and images © 2022 City of Gold Coast.