Greendale Creek Flood Study Adopted

Northern Beaches Council is responsible for the identification of flood prone land in the Local Government Area (LGA). We are committed to increasing our community's awareness of flooding so that people are better able to understand and plan for the flood risks they may face.

We have prepared the draft Greendale Creek Flood Study that outlines how flood waters move through the Greendale Creek catchment and flow down to Curl Curl Lagoon.

The study area includes parts of the suburbs of Beacon Hill, Brookvale, Curl Curl, Freshwater and North Curl Curl. The catchment is affected by flooding due to rainfall runoff, and in the lower parts from rising lagoon flood waters. The results of the study will update the flood information currently used by Council for planning.

Between 29 March 2023 and 7 May 2023, we publicly exhibited the draft study and invited your questions and feedback. There were 74 one-on-one appointments attended by residents in the study area, numerous phone conversations and 1,414 visits to this project page from 981 different visitors. A total of 37 submissions were received.

The primary concerns for the community were how the study was going to affect insurance premiums, house prices and future development potential. Based on community feedback, some refinements were made to the flood model which resulted in a number of properties no longer being within the Flood Planning Area and/or Probable Maximum Flood area.

Our Community Engagement Report is now available and includes all submissions, specific questions raised and our responses.

Study area map

View the maps below showing the Greendale Creek Flood Study catchment boundary and Flood Planning Area that is based on the 1 in 100 year flood event.