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

Adaptation outcomes and associated actions

The assessment of inundation risks to Tewantin show the level of risk across all asset types in
areas adjacent to the Noosa River will very likely become intolerable within 50 years.

Analysis of socio-economic, environmental, and governance considerations, as well as community
input received throughout the CHAP’s development, indicate the most appropriate adaptation
pathway for responding to inundation risks in this locality is one that supports existing recreational
and visual amenity values, as well as accessibility and infrastructure services. Therefore, the
preferred adaptation outcomes for this locality are:

    -    Implement measures that protect important recreational areas, stormwater network, road
         and footpath assets from periodic tidal inundation
    -    Where possible, re-locate major recreational and infrastructure assets (e.g. amenities
         blocks, the Tewantin water park) outside the projected high-risk foreshore areas by 2070
    -    Where important recreational assets cannot be feasibly re-located, seek to accommodate
         the risks by adapting the design of these assets (e.g. adaptive landscape design) to be
         more resilient
    -    Re-design important road and buried service infrastructure networks to be more resilient to
         inundation hazards.

The following actions will help progress the achievement of these outcomes:

 MANAGEMENT             ACTIONS FOR NEXT 5 YEARS
 RESPONSE
 AREA

 Land Use               Maintain existing development requirements.
 Planning

                        Investigate a range of backflow prevention methods and technology for
                        stormwater network assets identified as vulnerable

                        Investigate location, scale and design of adaptive landscape structures (e.g.
 Public                 non-intrusive levees, innovative design features for garden beds, public
 recreational,          furniture, park design and raised foreshore footpaths20) to prevent frequent,
 built, and             shallow and low flow tidal inundation of Ward Park, RSL Memorial Park, and
 Infrastructure         Tewantin Park and adjacent parking areas.
 assets                 Investigate road corridor designs that are more resilient to frequent wet/dry
                        scenarios and incorporate into asset renewal plans where appropriate

                        Investigate opportunities for maintaining functional approaches to Doonella
                        Bridge and the ferry to Noosa North Shore

 Foreshores and         No actions proposed.
 Natural Areas

 Other                  No actions proposed.


Other shire wide actions are also identified at the beginning of this Section.

20 Depending on the location requirements, these may range in height up to 300mm in the case of raised

footpaths, or a height consistent with safety regulations in the case of barriers (e.g. approximately waist high)
Noosa Council – Coastal Hazards Adaptation Plan 2020 - 2030 (community consultation version)            Page 56