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

                                                 Erosion Risks by Year
         Asset Type
                             Present Day             2040                2070               2100
         Tourism                                            Very High
         Business                                           Very High
         Residential                                           Low
         Infrastructure                                     Very High
         Recreational                                          High
         Natural                          Medium                                   High
              Table 14 - Change in Noosa Heads asset erosion risk profiles across planning horizons

At present, the measures for mitigating the erosion risks in Noosa Heads are:

   -   Recycling of sand from the open coast side of Noosa Spit, to the southern end of Noosa
       Main Beach
   -   Groyne walls to slow the northward movement of sand, making it available for sand
       recycling
   -   The seawall on the seaward side of Hastings Street (beneath the boardwalk).


Erosion Aadaptation outcomes and associated actions – Erosion for Noosa Heads


The assessment of coastal erosion risks in Noosa Heads show the level of risk to all built assets
along the Noosa Main Beach beachfront is already considered intolerable. In addition, risks to the
natural assets within the Noosa Woods area will be become intolerable by 2070.

Analysis of economic, social, and environmental considerations, as well as multiple legal and
governance constraints and significant input from the Noosa community indicates the most
appropriate adaptation pathway for responding to high coastal erosion risks in this locality is one
that seeks to provide support for existing beach uses, amenity values, key public services, and
economic activities by continuing (and enhancing where feasible) existing coastal protection
measures in this locality whilst prohibiting further intensification of urban development over the
short- to long-term.

As a result, the preferred adaptation outcomes for this locality are:

   -   Implement measures that support and enhance dunes, beach health and natural coastal
       processes as soon as possible
   -   Re-locate service infrastructure assets to areas outside the high-risk area by 2070
   -   Where important recreational and service infrastructure assets cannot be feasibly located,
       seek to accommodate the risks by adapting the design of these assets to be more resilient
       during and after a major erosion event
   -   Avoid increasing the exposure and vulnerability of people and property in high-risk erosion
       areas.


Figure 17 shows the expected progression of these preferred outcomes between 2020 and 2100.
Table 15. provides a breakdown of actions in support of these outcomes, to be pursued within the
five year life of this plan.




Noosa Council – Coastal Hazards Adaptation Plan 2020 - 2030                                           Page 55