2019-07-09 P&E Agenda - Item 10 - Attachment 1 - Coastal Hazards Risk, Vulnerability and Adaptation Assessment

 Noosa Shire Council Coastal Hazard Mapping                                                                                                                                      32
 Erosion Prone Area Assessment

                                             Table 3-6     Beach Compartment Summary of Open Coast Calculated Erosion Distances

                  Long term          Short term storm              Dune            Shoreline response to sea level           Calculated erosion distance                Notes
                   recession        erosion component            slumping                       rise                                      E
 Beach            component                                     component                       SxF                                      (m)
 Compartm                                                                                        (m)
 ent
                  (N x R) x F       C1 x F          C2                D                 2040      2070          2100        Present     2040     2070     2100
                      (m)            (m)            (m)              (m)         (0.2m SLR)    (0.5m SLR)    (0.8m SLR)      -day2

 Peregian
                       14             20            18                18                10         25            41            56        80       95       111
 Beach
 Castaways
 Beach to
                       14             52             0                16                 8         22            36            68        90      104       118
 Sunshine
 Beach
 Noosa                                                                                                                                                              Seawall controls
 Main                  14             59             0                11                14         36            59            70        98      120       143      expected to limit
 Beach3                                                                                                                                                                 erosion

 Noosa                                                                                                                                                             Possible bedrock
 North                 14             28             3                15                13         31            50            46        73       91       110     control may limit
 Shore                                                                                                                                                                 erosion

                                                                                                                                                                   Possible bedrock
 Teewah
                       14             24             2                12                13         34            53            38        65       86       105     control may limit
 Beach                                                                                                                                                                 erosion

1 The calculated erosion distances are measured landward from the frontal dune toe. These estimates do not consider local erosion controls where present (i.e. bedrock or engineered

coastal protection structures). They also do not apply to coastal waterway entrances.
2 Short term erosion and dune slumping components only (C1 x F + C2 + D)

3 Noosa Main Beach seawall expected to limit long term recession and shoreline response to sea level rise. Mapping assumes the erosion hazard area is limited to the short term

erosion and dune slumping components only (i.e. the present-day width) landward of the seawall.




 G:\Admin\B22613.g.mpb.Noosa_CHAS\R.B22613.002.04.NSC_CHAP_Mapping.docx