MCU25 0087 - Reference Document - Coastal Hazard Assessment (As Published)

                                                                       17 The Esplanade, Sunshine Beach                              Report


                      Table 4-2 Adopted Storm Tide Levels (excluding wave setup) for Sunshine Beach (Aurecon, 2013)
                            Return Period   Current Climate Storm Tide Level
                             (years ARI)               (m AHD)
                                100                       1.74
                                500                       1.84
                                1000                      1.89


                      4.2      Wave Climate
                      The wave climate at Sunshine Beach is influenced by both locally wind-generated sea and ocean
                      swell. Sea describes wind generated waves where wind energy is still being transferred to the ocean.
                      Swell describes wind generated waves that have travelled out of their generating area. Swell
                      characteristically exhibits smoother, more regular, and uniform crests and a longer period than sea. In
                      open coastal areas sea waves generated by local winds are often superimposed on swell waves.
                      The wave climate for Sunshine Beach has been previously reported by BMT (2013) ‘Coastal
                      Processes Study for the Sunshine Coast’ prepared for the Sunshine Coast Regional Council. Wave
                      roses (BMT, 2013) indicate that the wave climate for Sunshine Beach is dominated by waves from the
                      east-southeast direction (refer Figure 4-1).
                      The design offshore significant wave heights for the Sunshine Coast have been previously published
                      by BMT (2013) refer (Figure 4-2). For this assessment a 100-year ARI offshore significant wave
                      height of 6.2m has been adopted to be consistent with the ‘Coastal Processes Study for the Sunshine
                      Coast’ prepared by BMT (2013).




                                                  Figure 4-1: Wave Rose Sunshine Beach (BMT, 2013)




                                                                                           252662-MN-RP-CO-0001B | 10 November 2025 | Page 19

Document Set ID: 24631530
Version: 1, Version Date: 24/03/2026