2021-11-15 GC Agenda - Item 7 - Attachment 2 - Coastal Hazards Adaptation Plan with tracked changes

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-year ARI and a 500-year ARI erosion event across all planning horizons
         o Two successive 20-year 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                                              Page 85