2021-01-18 GC - Item 3 - Attachment 1 - Coastal Hazards Adaptation Plan for Community Consultation

Peregian Beach
Setting

Peregian Beach (see Figure 11) is the southern-most township in Noosa Shire. The locality has a
four-kilometre beach frontage with a vegetated dune area between the developed areas and the
sea. Peregian Beach maintains the scale and character and atmosphere of a village that provides
local convenience shopping, business and employment services for residents and visitors within
the locality.

Risks
Peregian Beach has historically experienced erosion on beaches after strong swells and tropical
storms with sand naturally replenishing through coastal processes such as longshore drift. The low
profile of the beach and dunes in some parts of the coastline mean some areas of the beach and
dune foreshore are exposed to coastal erosion today, with an increasing number of others assets
exposed to future coastal erosion over time. Appendix 3 shows the change in risk profile across
various parts of Peregian Beach as the area exposed to the effects of coastal erosion increases.
Table 2 provides a summary of the changing risk profile for six broad asset types within the locality
that are projected to be exposed to the effects of coastal erosion between present day and 2100.

The main assets at risk by mid-late century (2070 – 2100) in Peregian Beach are natural assets
(beaches and vegetated dunes); beach accesses; Peregian Park and the various community and
visitor recreation assets it contains (picnic tables, skate park, footpaths); and the backyards of a
small number of residential lots at the very southern end of Peregian Beach. The Peregian Beach
Surf Life Saving Club itself is not expected to be directly impacted during a major erosion event,
however operations are likely to be impaired due to damage to the park and beach accesses.
Impacts to these assets may also have indirect impacts on adjacent commercial and retail
businesses.

A moderate amount of buried stormwater and sewage infrastructure is also likely to be at high risk
by 2100, along some streets south of Peregian Park. Victory Park carpark and amenities block is
also likely to be impacted.

          Asset Type                               Erosion Risk by Year
                              Present Day             2040                2070                2100
             Tourism                                              Low
             Business                                             Low
            Residential                                Low                                  Medium
          Infrastructure                     Low                        Medium                High
           Recreational            Low              Medium    8
                                                                                    High
              Natural                        Low                        Medium                High
                  Table 3 - Change in Peregian Beach asset risk profiles across planning horizons


At present, the only methods for mitigating the risks in Peregian Beach are:

    -   Maintaining and enhancing vegetated dune areas, which act as a natural buffer to erosion
        by dispersing wave energy during storm events
    -   Planning controls on coastal development that prevent encroachment into the vegetated
        dune areas, thereby preserving natural coastal processes of erosion and accretion.



8 The recreational asset at risk in this case is beach use due to exposure of beach accesses by 2040.


Noosa Council – Coastal Hazards Adaptation Plan 2020 - 2030 (community consultation version)         Page 33