2017-10-10 S&O Agenda - Attachment 1 to Item 7 - Noosa Local Disaster Management Plan 2018

7.1.2          Risk methodology – risk calculation table


                                                                                              Consequences
 Risk Table
                                                              Insignificant      Minor          Moderate           Major       Catastrophic

                             The event will occur at least
                Almost       once per year (Average
                                                              Medium - 42     Medium - 48           High - 69   Extreme - 84   Extreme - 90
                Certain      Recurrence Interval (ARI) < 1
                             year).

                             The event could occur at least
                Likely       once every one to ten years.      Low - 15       Medium - 45           High - 66    High - 75     Extreme - 87
                             (ARI 1-10 years).

                             The event could occur at least
                Possible     once every ten to fifty years.    Low - 12        Low - 27        Medium - 54       High - 72      High - 81
  Likelihood




                             (ARI 10-50 years).

                             The event could occur at least
                             once every fifty to one
                Unlikely                                        Low - 9        Low - 24        Medium - 51      Medium - 60     High - 78
                             hundred years. (ARI 50-100
                             years).

                             The event could occur at least
                             once every one hundred to
                Rare                                            Low - 6        Low - 21             Low - 33    Medium - 57    Medium - 63
                             one thousand years. (ARI 100-
                             1000 years).

                             The event may occur at least
                Improbable   once every thousand years or       Low - 3        Low - 18             Low - 30     Low - 36        Low - 39
                             more. (ARl >1000 years).




Noosa Local Disaster Management Plan 2018                                                 Page 38