Catchment Area: Wollongong, Mangerton, Coniston, Mt St Thomas
Waterways: JJ Kelly Creek
This catchment has experienced a number of floods in the past, the most recent in March 2011 and February 2012 which resulted in minor inundation of public and private property in the lower parts of the catchment.
WMAwater were engaged to prepare a Flood Study for this catchment area.
- The Flood Study defines the nature of the flood risk in the catchment area.
- The Floodplain Risk Management Study identifies measures to reduce flood risk and the impacts of flooding on the community.
- The Floodplain Risk Management Plan outlines recommended measures to best address the existing, future and continuing flood problems in the area. It includes guidelines for all future developments in the area.
Progress of the Study:
The Wollongong City Flood Study and Floodplain Risk Management Study and Plan were completed by Council in 2013 and 2015, respectively. These studies identified the flood risk within the catchment and steps to be taken to manage the flood risk.
Since these studies, Council has been exploring some of the flood mitigations measures, and new developments within the catchment and changes to the blockage policy and new national rainfall guidelines it is possible flood behaviour has changed.
As a result, the flood study is being reviewed. The data collection phase has been completed and the consultant is reviewing the responses.