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2019-12-16 GC Agenda - Item 5 - Attachment 1 - Noosa Spit Shoreline Erosion Management Plan-Part 1
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Log in to see the plans as drawnNoosa Spit SEMP Final Report 74
Shoreline Erosion Mitigation Options
Table 4-5 Summary of MCA Results Developed with the PCG
Effectiveness Whole of Life Environmental Social Benefits Risk
Costs Values Overall Score
(30% weighting) (20% weighting) (15% weighting) (10% weighting) (25% weighting)
Option 1a – Sand plug at either end of
100% 50% 50% 100% 100% 83%
Dog Beach and shoreline nourishment
Option 1b – Sand plug at the southern
end of Dog Beach and shoreline 75% 25% 25% 75% 75% 58%
nourishment
Option 2 – Extension of the existing
training wall/groyne at western end of 75% 75% 50% 50% 75% 69%
Dog Beach
Option 3 – Extension of submerged
25% 75% 50% 0% 0% 30%
breakwater and two new groynes
Option 4 – Three new short groynes at
50% 100% 50% 50% 75% 66%
Dog Beach
Option 5 – Shore parallel seawall 100% 25% 25% 25% 75% 60%
Option 6 – Do nothing 0% 100% 25% 0% 0% 24%
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