Source: Manly Daily
Northern Beaches Council environment general manager with machinery ahead of the Narrabeen Lagoon opening.
Works begin to minimse Narrabeen Lagoon’s flood risk
Northern Beaches Council has started major sand removal works at the mouth of Narrabeen Lagoon to minimise the risk of flooding of surrounding areas.
Until mid-December, contractors will remove about 45,000 cubic metres of sand from the lagoon entrance.
The work will take place on the eastern and western sides of the Ocean St Bridge and the sand will be used to replenish the Collaroy-Narrabeen beachfront.
A generic shot of Narrabeen Lagoon. Picture: John Morcombe
The council’s environment and infrastructure general manager Ben Taylor said the lagoon closed every few years from sand naturally moving into the
entrance from the beach.
The last clearance works were completed in late 2016.
“Since then, the lagoon entrance has filled with sand faster than expected, mainly due to low rainfall reducing the natural outflow of sand,” he said.
“Following the rapid closure of the lagoon entrance in March this year the council has fast-tracked the design and approvals for this important project.
“The council carefully monitors and manages the entrances of the lagoons to reduce the risk of flooding to surrounding properties.”