2019-12-16 General Committee Agenda

GENERAL COMMITTEE MEETING AGENDA                                                                  16 DECEMBER 2019


5                        NOOSA SPIT SHORELINE EROSION UPDATE - DECEMBER 2019
DOCUMENT INFORM AT ION




Author                              Project Coordinator – Flooding, Coastal and Foreshore, Daniel Wishaw
                                    Infrastructure Services Department

Index                               ECM/ Project / Noosa Dog Beach SEMP Coastal Monitoring – CAP. 100723
                                    ECM / Subject / Erosion

Attachments                         1.    Noosa Spit Shoreline Erosion Management Plan
                                          (Note: 172 page attachment has been provided separately to this report)



EXECUTIVE SUMMARY
Not applicable.

RECOMMENDATION
That Council note the report by the Project Coordinator – Flooding, Coastal and Foreshores to
the General Committee Meeting dated 16 December 2019 and
A.                       Note the Noosa Spit Shoreline Erosion Management Plan as contained in Attachment 1 to
                         the report; and
B.                       Refer funding of the implementation pathway as described in the Noosa Spit Shoreline
                         Erosion Management Plan for consideration in the 2020/21 financial year budget process.



REPORT
1.                       Background

Council, at its Ordinary Meeting of 15 November 2018, supported the development of a Shoreline
Erosion Management Plan (SEMP) for Noosa Spit and the provision of a quarterly update. The
technical work for the Noosa Spit SEMP is now complete and has been delivered to Council for
review.

This report recommends an implementation pathway for consideration of funding in the 2020/21
financial year.

2.                       Project Update

The project was conducted over multiple stages, with oversight from the Council’s internal Project
Control Group and consultation with the Department of Environment and Science. Each of these
stages can be found in the attached report and they include:
   A historical review of erosion at Noosa Spit and a review of existing mitigation measures
     (Section 2.2 and 2.3).
   Review of the recent shoreline recession including identification of changes that caused an
     acceleration of recent erosion (Section 2.4.1).
   Development of a numerical coastal processes model (Section 3).
   Evaluation of different river mouth alignments, including a ‘breakthrough’ event at Doggie
     Beach (Section 3.6).
   Shoreline erosion mitigation options (Section 4).

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