Nature-based shoreline protection trial, Inner Harbour, Port AdelaideNature-based shoreline protection trial, Inner Harbour, Port AdelaideNature-based shoreline protection trial, Inner Harbour, Port AdelaideNature-based shoreline protection trial, Inner Harbour, Port Adelaide
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Radio Adelaide interview about Estuary Care Foundation 28.10.18
Radio Adelaide interview
November 4, 2018
3-D tiles on seawall, McMahons Point, Sydney Harbour February 2019
Seawall Tiles trial in Inner Harbour, Port Adelaide
March 18, 2019

Nature-based shoreline protection trial, Inner Harbour, Port Adelaide

February 11, 2019
Categories
  • Living Shorelines
Tags
  • aquatic habitat restoration
  • climate change
  • coastal resilience
  • intertidal
  • mangroves
  • nature based coastal protection;
  • port river
  • shellfish
  • shoreline protection trial
Shoreline protection trial site by ECF in Inner Harbour, Port Adelaide

The Foundation has secured a $10K SA Community Sustainability Grant, sponsored by the SA Government and the Conservation Council SA.

The grant program is supporting the community in ‘implementing, on-ground climate related projects.’

ECF’s project will lessen the impact of wash on the seawall and shoreline in the Inner Harbour, on the SW side of Jervois Bridge, where the seawall shows signs of eroding.

Port Adelaide is one of the most vulnerable areas in SA to flooding. With rising sea levels and subsiding land, homes on both sides of the Inner Harbour in Port Adelaide face potential flooding risks.

A nature-based trial is feasible on the SW side and has the support of the Coast Protection Board and DEW.

The trial will occur in the intertidal zone and the Foundation will deploy open weave coir bags of clean recycled shell and translocate mangroves. Mangroves are naturally spreading into that area. We expect that the bagged shell will be colonised by resident shellfish to form a small intertidal reef and together with the mangroves will enhance the stability and longevity of the seawall.

Mangroves taking root along shoreline, in Inner Harbour, Port Adelaide

Mangroves taking root along shoreline

The Foundation has lodged an application for a PIRSA Permit (for deploying bagged shell) and is preparing a Development Application (for shoreline protection) to Council.

If the approvals are achieved soon, then potentially ECF volunteers can collect mangrove propagules floating in the River and plant them between the bagged shell and the seawall. Otherwise juvenile mangroves will be translocated (DEW Permit allowing) from areas where they are abundant.

The first stage of the project is to return rocks to the seawall, where possible, and to clean up the glass, tyres, wire and other waste on the site.

Reinstating rocks and a clean up are needed, along Inner Harbour seawall in Port Adelaide

Reinstating rocks and a clean up are needed

 

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