2021-01-18 GC - Item 3 - Attachment 2 - Phase 7 Project Summary Coastal Hazards Adaptation Plan

 Noosa Shire Council Coastal Hazard Adaptation Plan: Project Summary                                        7
 Methodology




                Table 2-2     Permanent inundation due to Sea Level Rise mapping assumptions

           Planning            SLR            Noosa               Lake    Tewantin       Lake Cootharaba
           Horizon          allowance       Heads HAT            Weyba   HAT (mAHD)        HAT (mAHD)
                                (m)          (mAHD)               HAT
                                                                (mAHD)
          Present-day            0             1.16              0.5         0.91                0.2
              2040              0.2            1.36              0.7         1.11                0.4
              2070              0.5            1.66              1.0         1.41                0.7
              2100              0.8            1.96              1.3         1.71                1.0

2.2.3    Phase 4: Asset Prioritisation
         In phase 4 of the CHAP, Noosa Shire Council have sought to:

         • Identify and map assets – both tangible and intangible within the defined coastal hazard area;

         • Identify and understand potential impacts to interdependent infrastructure systems;

         • Estimate the underlying value – both economic and non-economic – of affected assets; and

         • Prioritise assets for analysis as part of subsequent CHAP phases.

         All identified assets were prioritised according to:

         • Difficulty to replace an asset

         • The cost of replacing an asset

         • The value the community places on an asset

         • The scarcity of an asset across the Shire

         • The remaining design life of an asset i.e. a shorter design life may create opportunities for asset
           replacement or responding to a changing risk profile easier

         • The ability of an asset to withstand a hazard

         • The criticality of an asset i.e. is an essential service in an emergency

         • Biodiversity value

         • The role the asset plays in Noosa’s economy i.e. fiscal contribution

         • The aesthetic value of an asset.

         Any assets that received a score greater than 4 (on a scale of 0-5) were identified as key assets and
         have been included in the risk assessment. Asset types that are not considered ‘key assets’ on an
         individual basis, but are when grouped (e.g. a given neighbourhood of private dwellings) have also
         been included.