In 2015, Council engaged Council engaged consultants, WMA Water, to conduct a flood study. This involved modelling flood behaviour using rainfall data and information from the community about past storm events. The study determined where flood water will run, how the existing drainage system will cope and which properties are affected.

In 2017, WMA Water, has been engaged again – this time to undertake a flood management plan. This involves reviewing the flood study and identifying options for reducing flood risk in the catchment including:

  • better flood planning;
  • controls on development; and
  • new or upgraded stormwater systems.

What's happening now?

The recent review of the flood study identified properties in the catchment that are flood affected. This means that future development on properties that are flood affected may be subject to development controls.

Find out more

  • View the flood study
  • See the map of flood planning area
  • Read the Frequently Asked Questions
  • Talk to a Council Officer and/or consultant at a Community Information Session – see details below. It is essential to register your details and a time to attend the Information Sessions. To do this, please phone Ryan Hawken on 9335 2246.

Venue & Address



Petersham Service Centre

2 – 14 Fisher Street, Petersham

Thursday 11 May 2017

6:00pm to 8:00pm

Tuesday 23 May 2017

6:00pm to 8:00pm

Have your say

You are invited to provide feedback on the flood study and its findings by completing the submission form below.

Feedback closes on Friday 2 June 2017

Next steps

All submissions received through the public exhibition will be reviewed and considered by Council officers and WMA Water. Any changes resulting from this will be included in the updated Flood Planning Area map which will then be considered at a forthcoming Council meeting. Everyone who makes a submission will be notified of the outcome of the review of their property before the updated map is presented to Council.

Later in the year you will be invited to comment on possible options for reducing flood risk which will contribute to the plan for managing floods that is currently being developed.

Contact details

If you have any questions, please contact Ryan Hawken by phone on 9335 2246 or email.

This project is supported by the NSW Government’s Floodplain Management Program


Has your property been identified as flood affected? Required
Do you want Council to review the status of your property? Required
Your details

The survey form is now closed. Thanks for your contributions.

Which flood events have you experienced? Required
The flood waters were: Required
How did the flooding affect you/ your family/ your business? Required
Please tick all that apply: Required
How long have you lived, worked or owned property in the Hawthorne Canal catchment? Required
Do you give permission for WMA Water (Council's consultants) or Council to contact you to discuss the information you have provided? Required
Have you ever experienced flooding in the Hawthorne Canal area? Required
Your details

The survey form is now closed. Thanks for your contributions.