About The Project
Tenterfield Shire and Kyogle Councils have engaged engineering consultant, BG&E to develop a Flood Study for Woodenbong. The study is being undertaken with financial and technical assistance from Council and Department of Planning, Industry and Environment (DPIE) through the New South Wales (NSW) Government’s Floodplain Management Program.
The Woodenbong Flood Study will help us understand the likely flooding scenarios for the town of Woodenbong including flooding from Tooloom Creek and Boomi Creek and runoff from local catchments.
The Woodenbong Flood Study will:
- develop flood models based on historic data and statistical analysis;
- identify the areas of flood prone land to assist with flood planning and risk management;
- establish the likely flood risk and flood hazard for properties in the study area;
- develop flood mapping to assist in future planning and development; and
- provide flood intelligence to the NSW State Emergency Services to assist in flood emergency response.
Floodplain Risk Management Process
The study is being prepared in line with NSW Government Policy and the Floodplain Risk Management Process. The process consists of five key stages. The Woodenbong Flood Study will complete Stage 1 and 2 (Data Collection and Flood Study). Once complete, the findings of the Flood Study will enable Council to start to the next step in the Floodplain Risk Management process; that is consider measures to reduce impacts of flooding.
Thank you for your responses to the community questionnaire. The questionnaire has now closed. We received a great response with many of you providing photos which are helpful in validating the flood modelling results. If you have further information please use the email address under the Contacts section of this page.
No flood studies have ever taken place at Woodenbong. The purpose of a flood study is to develop a detailed understanding of the flood behaviour from both Tooloom Creek and the local catchments.
Flood behaviour in the area is defined in this study and allows later in the Floodplain Risk Management Study and Plan to improve safety within the community. The Floodplain Risk Management Study and Plan will look at flood related development controls, evacuation and warnings systems, cost effective flood mitigation measures and improve community awareness about flood risk.
The frequency of flooding is expressed as an Annual Exceedance Probability (AEP). This is the percentage change that a flood of a certain size or greater will occur in any one year. For example, a one per cent AEP flood has a 1-in-100 chance of occurring in any one year. This is sometimes also called a 100-year AEP flood. Just because an area may have had a 100-year AEP flood it does not mean it will not happen again for another 100 years. The 1974 and 2011 Brisbane River floods are an example of this. In a similar way, a five per cent AEP flood has a 1-in-20 (5-in-100) chance of occurring in any one year.
Flood Study Outcomes
Select from the drop down menus below to understand more about the outcomes of the Flood Study.