2021-10-08 SM - Item 1 - Attachment 2 - Draft Coastal Hazards Adaptation Plan - tracked changes

                        Liaise with beachfront asset owners to ensure their natural disaster
Other
                        management plans are mitigating erosion event risks where possible
          Table 15 - Five year action plan for responding to projected coastal erosion risks in Noosa Heads

Other shire wide actions are also identified at the beginning of this Section 5.



Inundation Rrisks – Inundationto Noosa Heads

Inundation due to storm tide and increases in tidal extents present risks to public assets throughout
the planning horizon of this plan. In the present day, areas and assets at risk due to storm tide
include low-lying parks, road networks and buried infrastructure (e.g. stormwater networks), and
natural areas within Noosa Spit.

Permanent tidal inundation exposes many of the same assets that are subject to the effects of
storm tide inundation, however these events are lesser in area and depth, albeit on a much more
regular basis. It is this regularity that results in permanent tidal inundation representing a significant
risk to some assets within Noosa Heads. These assets include natural and recreational foreshore
assets along the river-side of Noosa Spit, Lions Park, as well as road and other network
infrastructure along Noosa Parade and Noosa Drive.

A small number of private commercial and tourism assets at the Hastings Street end of Noosa
Drive are expected to be exposed by 2100. Other private assets along Noosa Parade and Noosa
Drive are not considered at high risk from inundation due to elevated land and building floor
heights as a result of planning controls in place through successive planning schemes.

          Asset Type                        Tidal Inundation Risks by Year
                              Present Day              2040                2070               2100
          Tourism                                      Low                                  Very High
          Business                                      Low                                 Very High
          Residential                                             Low
          Infrastructure                      Low                          High             Very High
                         18
          Recreational              Low              Medium                       Very High
          Natural                                                 Low
             Table 16 - Change in Noosa Heads asset inundation risk profiles across planning horizons


At present, the only method for mitigating inundation risks in Noosa Heads is:

    -   Planning and land use regulations are in place for new development including minimum
        floor heights for new buildings.


Inundation Aadaptation outcomes and associated actions – Inundationfor Noosa Heads


The assessment of inundation risks across Noosa Heads show the level of risk to some tourism,
business, recreational and infrastructure assets is likely projected to become intolerable in the later
decades of the century.


18 This result is due to risks to ‘Dog Beach’ and surrounds. Lions Park was rated medium risk by 2100.


Noosa Council – Coastal Hazards Adaptation Plan 2020 - 2030                                                   Page 57