Ebbtide Street - South Shore flood protection structure works


We are constructing new storm water backflow prevention structures.


The existing backflow valves are prone to blockages and difficult to maintain so are being replaced with a new design.


New backflow prevention structures are to be constructed over existing outfall pipes at Ebbtide St / Estuary Rd, Ebbtide St / Caspian St.


February 2022 to early June 2022. Work will be intermittent to align with tidal groundwater levels.(weather/site condition dependent).


The Contractor is Trenching Dynamics. Phone Jonathan Parsons 021 988 035, Monday to Friday.


  • Installation will be staged with work mainly occurring around the lowest tides in each month. 
  • Work may occur early or late in the day to work around tidal ground water levels.