Why is the work being undertaken?

To improve navigation and safety for the residents of Deepwater Estate and the Rural Fire Service.


Who will be undertaking the work?

Southern Dredging, external contractors for Sutherland Shire Council.

How long will the work take?

This will depend on weather, however approximately 3-4 weeks for Gweneth Thomas Wharf and 2 weeks for the Rural Fire Service.

How are environmental impacts being mitigated?

Soil testing and a Marine Ecology study have been undertaken and a Review of Environmental Factors prepared to fully understand the river in the vicinity of the dredging. These documents produced a number of processes contractors need to undertake to minimise environmental impacts during the dredging.

This includes the use of markers to indicate no-go zones plus silt booms and silt curtains to minimise dispersal of silt into the river. 

The dredging itself employs a ‘clam shell’ excavator which creates much less disturbance to the river bed. The excavator being used is new and designed to minimise noise.

Why not dredge other areas of the river?

The bed of the Woronora River is owned by NSW Department of Planning Industry and Environment - Crown Lands, and general dredging are other works are undertaken by them. Council has a dredging policy under which dredging is only undertaken for safety or critical navigation, under which this project is classified.

Where is the spoil being taken?

The spoil is being taken to a disposal at sea site authorised by Australian Federal government approximately 10 km off the coast of Sydney Harbour. Stringent environmental testing was required and undertaken to achieve the permit to allow this to occur.

Will there be disruption to parking?

Parking in the car park for the wharf will be limited for the duration of the works.