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

       low magnitude. Table 13 shows those asset types within this locality that are projected to be
       exposed to the effects of tidal inundation between present day and 2100 (map versions are
       available in Appendix 3). Whilst there has been very limited and low-intensity development to date,
       a significant proportion of the development is private dwellings located along the shores of the
       Noosa River. Some of these areas experience inundation as a result of king tides and minor
         Noosa Shire Council
       flooding, however most residences are not affected. These hazards are projected to increase in
       severity and frequency over the life of this plan. There are limited publicly-owned assets in this
       locality, consisting primarily of unsealed road network, with little expansion of development areas
       anticipated.

                   Asset Type                       Tidal Inundation Risks by Year
                                      Present Day              2040               2070                2100
                   Tourism                                               Low
                   Business                                              Low
                   Residential             Low                 High                      Very High
                   Infrastructure          Low                 High                      Very High
                   Recreational                                          Low
                   Natural                 Low               Medium                         High
                   Table 13 - Change in Noosa North Shore asset inundation risk profiles across planning horizons
               Table 13 - Change in Noosa North Shore asset inundation risk profiles across planning horizons

       At present, the only methods for mitigating the erosion and inundation risks in Lower Noosa North
  At present,
        Shore the
              are: only methods for mitigating the erosion and inundation risks in Lower Noosa North
  Shore are:
           -    Existing vegetated dune areas, which act as a natural buffer to erosion by dispersing wave
      -	Existing vegetated
               energy        dune events
                      during storm areas, which act as a natural buffer to erosion by dispersing wave
         energy  during and
           - Planning   storm  events
                            land use regulations are in place to control further land subdivision, and
                building floor heights for new buildings
      -	Planning   and land use regulations are in place to control further land subdivision, and building
            - Major portion of Noosa North is designated for conservation
         floor heights for new buildings
      - Major portion of Noosa North is designated for conservation


  Inundation adaptation outcomes and associated actions for Noosa North Shore
  The assessment of inundation risks within Noosa North Shore shows the level of risk to residential
  and road network assets may become intolerable within approximately 20 years. Intolerable risks to
  natural areas and biodiversity are more likely than not to eventuate by the year 2070.
  Assessment of a range of socio-economic, environmental, and governance considerations, as
  well as community feedback during the development of this plan, determine the most appropriate
  adaptation pathway for responding to frequent inundation risks in this locality is one that supports
  existing accessibility services, visual amenity values and natural ecological processes. Therefore, the
  preferred adaptation outcomes are:
      -	The increased inundation risk to service infrastructure assets is accommodated through
         adaptive design

  Figure 16 shows the expected progression of these preferred outcomes between 2020 and 2100.
  Table Noosa   Council –a Coastal
         14 provides               Hazards
                           breakdown    of Adaptation
                                           actions inPlan                                       Page 59
                                                      support of these outcomes, to be pursued within the
  five-year life of this plan.




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