2021-01-18 GC - Item 3 - Attachment 1 - Coastal Hazards Adaptation Plan for Community Consultation

developed in the course of and due to its development, shall be used to support the following
objectives of Council's Financial Sustainability Policy 2019:

   •   Council operates in an efficient and effective manner, minimising general rate increases
   •   Appropriate collection of cash funds for ongoing infrastructure and asset replacement and
       renewal
   •   Future trunk infrastructure financial obligations can be met
   •   Informed decisions are made on discretionary new operating or capital investment proposals
   •   Infrastructure and assets are maintained to required service levels.

Where exposure to intolerable coastal hazard risks exists, Council will also ensure that operational
and strategic decisions with a period of effect that overlaps with future periods of intolerable risk (e.g.
such as in the case of an asset with a long-life expectancy) give adequate consideration to
minimising the exposure of future councils to potential financial risk. In addition, revisions to the 10-
year financial plan and the annual budget process should consider achieving the adaptation
outcomes identified in the CHAP, where the implementation of the outcome occurs within the
relevant planning period.


Future Studies and Assessments
Throughout the development of this CHAP, a number of opportunities to further our knowledge of
coastal hazards and the effects these may have on a range of assets have been identified. Some
of these have already been funded by Council and completed (e.g. stormwater network
vulnerability assessment) separate to the CHAP studies.

Opportunities for further research include:

   •   Investigation into offshore sand supply, movement patterns including a shire wide coastal
       processes study that builds on the Sunshine Coast Council (2013) coastal process study
   •   Review existing and emerging research that discusses future wave climate projections, and
       assess the impact this may have on coastal process assumptions underpinning existing
       hazard models
   •   Modelling of additional coastal erosion events such as:
         o A single 20 ARI and a 500 ARI erosion event across all planning horizons
         o Two successive 20 ARI scale erosion events on beachfronts where risk is considered
            High or Very High by 2040 to understand the effect more frequent events of a smaller
            scale may have on ongoing beach and dune management activities
   •   Understanding the potential for saline intrusion into groundwater networks due to rising sea
       levels and the effects this may have on residential water use and groundwater-dependent
       ecosystems (initial research underway)
   •   Identify vulnerable biodiversity areas, opportunities for enhanced connectivity, risks from
       land use, and areas for improving the resilience of Noosa’s natural assets
   •   Perform audit of building materials and floor heights (inundation areas only) to inform future
       revision of hazard risk assessment, cost-benefit analysis, and non-coastal hazard modelling
       (e.g. extreme wind impact study).




Noosa Council – Coastal Hazards Adaptation Plan 2020 - 2030 (community consultation version)      Page 60