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

            Noosa Shire Council



  However, the impacts of frequent tidal inundation of low-lying areas (particularly the parks, road
  reserves and some private properties around the Noosa River) require further management action
  overtime. Some riverside areas are already affected by infrequent events such as catchment
  flooding and storm tide inundation. The relatively long periods of time between events allow for
  clean-up, recovery and repairs to be undertaken, and normal activities to resume unimpeded.
  However, activities and assets in these areas are unlikely to cope with impacts caused by frequent
  tidal inundation. As sea levels rise, some low-lying areas will be regularly covered with shallow sea
  water. In the absence of any adaptation response, this inundation will likely restrict access to roads,
  footpaths and recreational areas and cause nuisance to residents, business owners and visitors.
  The cost benefit analysis of coastal inundation risks8 assessed that a number of adaptation options
  are likely to be both suitable and feasible for responding to the risks associated with frequent tidal
  inundation in Noosa’s coastal zone. These include:
         •	Continuing existing measures for responding to risks of catchment flooding and storm tide
            inundation;
         •	Protecting buried infrastructure (stormwater and sewerage assets) through installation of
            innovative technologies;
         •	Reducing the frequency of inundation to roads, pathways, parks and business areas through
            the creation of adaptive landscape measures. This includes low rise levies (see Factsheet #1)
            and landscaped walls along some foreshore edges, elevated footpaths and improvements to
            drainage;
         • Ensuring asset plans and upgrades appropriately consider inundation risks.
  Fact sheets for these adaptation measures can be found on the project page on Your Say Noosa.




  8
      Aither, 2020. Noosa Shire Council CHAP – Phase 7, Noosaville Cost Benefit Analysis

Page 38