Cockle Creek Floodplain Study

Filed under Council, Environment & Pollution, News ~ by Press on  24 Mar 2019

New guidelines for Upper Cockle Creek floodplain management .

Lake Macquarie City Council has prepared a comprehensive draft flood study and risk management study and plan for the Upper Cockle Creek catchment, which defines the nature of flood risk in the area.

Continuing with flood awareness programs, optimising flood emergency management and improving flood warning systems should be high priority actions for the Upper Cockle Creek Floodplain, according to a draft study on public exhibition.

Lake Macquarie City Council Manager Environmental Systems Brad Sutton said Cockle Creek had a 109sq km catchment area with six main tributaries: Winding Creek, Brush Creek, Cocked Hat Creek, Slatey Creek, Burkes Creek and Diega Creek.

Flooding in the catchment has been recorded since the 1930s, with significant damage reported in February 1990, and during the June 2007 Pasha Bulker storm,” Mr Sutton said.

This risk management study and plan, along with a new, overarching flood study of the area, reassesses design flood levels using latest data and technology.

It also takes into account predictions of sea level rise and the potential for increased rainfall intensity due to climate change.”

According to the Floodplain Risk Management Study and Plan, 229 properties in the catchment would be affected by a ‘one per cent annual exceedance probability flood event’.

This refers to a flood that has a one per cent chance of occurring in any given year.

We are committed to building more flood-resilient communities across Lake Macquarie,” Mr Sutton said.

These plans will help us achieve that goal.”

The Upper Cockle Creek Flood Study and Floodplain Risk Management Study and Plan Final Draft Reports are on exhibition until Saturday 13 April at

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