2021-10-08 SM - Item 1 - Attachment 2 - Draft Coastal Hazards Adaptation Plan - tracked changes

NOOSA NORTH SHORE AND TEEWAH
Setting
Noosa North Shore and the Teewah township lay in the north-eastern part of Noosa Shire.

Noosa North Shore boasts outstanding natural beauty with pristine beaches, dramatic sand dune
systems, as well as coastal lowlands and wetlands adjacent to the Noosa River. The dynamics of
its open coast beaches is similar to those between Peregian Beach and Sunshine Beach,
consisting of approximately six kilometres of open sandy beach stretching between the Noosa
River Mouth and Second Cutting. Noosa North Shore provides residential and rural style home
sites, as well as significant areas zoned for environmental conservation. Noosa North Shore Beach
Campground sits directly behind the frontal dune with campsites close to the beachfront.

Teewah (see Figure 11) is the northern-most township along Noosa’s coastline. The township has
undergone low-levels of development in the form of single detached houses15, and sits adjacent to
beach frontage with a moderately vegetated dune area between the developed areas and the
shoreline. Despite having access constraints (due to the beach being the only official means of
access), Teewah is enjoyed by residents and visitors alike for the atmosphere that it provides of a
semi-remote coastal village of years gone by.


Erosion risks to Noosa North Shore and TeewahRisks - erosion
The beach adjacent to the Teewah township historically experiences erosion after large swell
events and tropical cyclones, temporarily exposing indurated sediments (commonly referred to as
‘coffee rock) beneath the frontal dunes. This beach has historically recovered well after these
events via natural coastal processes. The low height frontal dunes mean the vegetated dune is
going to bemay become increasingly at risk from coastal erosion events over time. By the year
2070 it is likely in such an event that the beach accesses, the Esplanade (including the portion of
beach used to reach the township), and eventually a portion of private beachfront lots will may be
exposed to the effects of coastal erosion.

The southern portion of Teewah Beach already experiences periodic episodes of short term beach
erosion, with sand naturally replenishing over time. The wide beach and dune profiles means much
of the beach is considered low risk from coastal erosion. However, the backyards (beach-facing) of
approximately 102 lots are expected tomay be exposed to erosion risks by the year 2070.

In addition, the camp ground is expected tomay be increasingly exposed to erosion over the
coming decades. By the year 2070 it is likely that beach-fronting camp sites and other minor
infrastructure will may be within the high erosion risk area.

Appendix 4 shows the projected change in erosion prone area due to sea level rise across various
parts of Teewah Beach during a severe storm event.Appendix 4 shows the change in risk profile
across the area encompassing the Teewah Township and along Teewah Beach as the area
exposed to the effects of coastal erosion increases over time. Table 11 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.




15 There are approximately 102 dwellings in Teewah, many of which are leased as tourist accommodation.


Noosa Council – Coastal Hazards Adaptation Plan 2020 - 2030                                     Page 47