2021-11-15 GC Agenda - Item 7 - Attachment 1 - Coastal Hazards Adaptation Plan

          Noosa Shire Council

         Determining tolerability to risks

       Ultimately,
  Determining      determining
               tolerability  to which
                                risks coastal hazard risks to respond to and how we do that is based upon
          Council and the Noosa community’s tolerance to risk and appetite for certain adaptation actions.
          Generally,
  Ultimately,         lower risk
               determining        levels
                              which   riskare  more tolerable
                                           to respond   to andand
                                                                howrequire
                                                                       best toless intensive
                                                                                respond         management
                                                                                           is based             actions (e.g.
                                                                                                       upon Council
          ongoing  monitoring)    with less  urgency  than  higher  risk levels.  The  risk  tolerance
  and the Noosa community’s tolerance to risk and appetite for certain adaptation actions. Generally,   scale  in Table 2
          outlines how  the  risk categories   may  be  interpreted   or acted   upon.  Many    risks
  lower risk levels are more tolerable and require less intensive management actions (e.g. ongoing    that are considered
          low or tolerable today, are expected to become intolerable as the level of risks increases over time.
  monitoring) with less urgency than higher risk levels. The risk tolerance scale in Table 2 outlines how
          Some may take quite some time to reach an intolerable level (e.g. not until the year 2100),
  the riskwhereas
            categories  may
                    others  maybe be
                                  interpreted
                                      reasonablyor expected
                                                   acted upon.    Many risks
                                                              to transition  fromthat are considered
                                                                                   tolerable             low or
                                                                                               to intolerable     tolerable
                                                                                                               within the
  today, next
          are expected    to become intolerable as the level of risks increases over time. Some may take
                twenty years.
  quite some time to reach an intolerable level (e.g. not until the year 2100), whereas others may be
  reasonably expected to transition from tolerable to intolerable within the next twenty years.

             Tolerability and Timescales
            Risk Level            Action required                                                          Tolerance
            Extreme / High        Eliminate or Reduce the risk                                            Intolerable
                                  Reduce the risk or accept the risk (provided
            Medium                                                                                         Tolerable
                                  residual risk level is understood)
            Low                   Accept the risk                                                         Acceptable
                                        Table22- -Risk
                                       Table       Risktolerance
                                                        tolerance scale
                                                                  scale applied
                                                                        appliedininPhase
                                                                                    Phase55


  Phases 6 – 7: Assessing potential adaptation actions for Noosa
       Phases 6 – 7: Assessing potential adaptation actions for Noosa
  There are numerous adaptation options that may be considered for adapting to coastal hazards in
       There are numerous adaptation options that may be considered for adapting to coastal hazards in
  Noosa’s   coastal
       Noosa’s        zone.
                coastal zone.Each
                               Each of   thesehas
                                     of these   has  a range
                                                  a range      of costs
                                                          of costs         andimplications
                                                                    and other   other implications
                                                                                            that requirethat require careful
       careful consideration
  consideration               before implementing.
                   before implementing.        A keyA aspect
                                                      key aspect
                                                               of ofadaptation
                                                                     adaptation planning
                                                                                  planningis avoiding  a
                                                                                              is avoiding  a course of
       course of action that once begun, cannot be altered. In addition, it’s also important to avoid pursing
  action that  once   begun,    cannot    be  altered. In addition,   it’s also
       actions that simply transfer or make the same problem worse elsewhere.
                                                                                 important     to avoid  pursing actions that
  simply transfer or make the same problem worse elsewhere.
       With these considerations in mind, a hierarchy of potential adaptation responses has been adopted
  With for
        these   considerations
           this plan,             in mind,
                      shown in Figure 9.   a hierarchy of potential adaptation responses has been adopted
  for this plan, shown in Figure 9.

                                                                                     Measures are implemented to ensure
                                                                                      a ‘no worsening’ of risks as a result of
                                                                                      development, infrastructure works or
                                                                                    other decisions, including via re-location.



                                                                                       Mitigate risks to an acceptable level
                                                                                             through careful design.



                                                                                      Use natural or engineered structures,
                                                                                     whether new or enhancements existing
                                                                                     xtructures, to protect assets from direct
                                                                                                 hazard exposure.


        Improve coastal hazard preparedness and information sharing to enhance community safety, health, and well-being.
         Noosa Council – Coastal Hazards Adaptation Plan                                                              Page 24

         Figure 9 - Hierarchy of preferred coastal management responses for areas vulnerable to coastal hazards
                Figure 9     Hierarchy of preferred coastal management responses for areas vulnerable to coastal hazards

Page 30
       Based on expert technical advice and feedback received through a series of community surveys
       and workshops, a range of criteria were applied to a list of 53 potential adaptation options for
       assets and locations where risks are considered high or very high. These criteria are shown in