COMPLETION OF THE ARR PROJECT The 2016 ARR is a major achievement as it is the first major update of the guidelines in nearly 30 years. The modernisation of the ARR Guidelines, including updates to the guidelines, software and data, has largely been completed. Finalisation of the Intensity Frequency Duration (IFD) data is currently being undertaken by the Bureau of Meteorology, and we will inform you when this is complete. The modernised guidelines provide local government en