Burrill Lake, NSW

Long-term estuarine processes along with coastal and tidal inundation were causing erosion on a section of foreshore in front of Lion's Park, Burrill Lake. This was exposing a recreational reserve and Council roads to storm damage. Shoalhaven City Council undertook beach scraping using sand from the adjacent tidal flat, in combination with revegetation, formalisation of accessways and installation of sand fencing/jute mesh to encourage faster stabilisation of the new dune sands. The dune/bank stabilisation measures have been monitored and maintained by Council on an ongoing basis, since implementation.

Project details

Beach renourishment

Method: Scraped

Sand source: Same sediment compartment

Sand volume (m2): 2000

Sand placement: Dune area, Visible beach

Frequency of renourishment: Once (two stages)

Date of first renourishment: 2021

Date of last renourishment: 2021

Dune replanting or construction

Method: Revegetation, Rehabilitation, Sand fencing

Rehabilitation - method: Restrict pedestrian access, Educational signage

Revegetation - species: Carpobrotus glaucescens, Casuarina glauca, Rhagodia candolleana , Lomandra longifolia, Banksia integrifolia, Tetragonia tetragonioides

Sand fence material: Hessian Cloth, Galvinised wire, and timber stakes. Also approximately 500m2 of jute mesh installed directly on sand.

Sand fence configuration: Alongshore

Sand fence height (m): 600 mm

Sand fence length (m): 45

General information

Approach

Beach renourishment, Dune replanting or construction

Geographic context

Estuary

Organisation responsible

Shoalhaven City Council, NSW Department of Planning and Environment.

Primary objective

Coastal protection

Coastal hazard

Erosion, Flooding

Asset vulnerable

Recreational, Built

Length of coastline targeted (m)

300

Date of completion

2022

Cost ($AUD)

$60,000

Source of project funding

Local government, State government

Project approvals needed

local, State, Native title