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2015-03-31 I&S Committee - Item 4 - Attachment 1 - Flood Mitigation Investigation Ashgrove Dr Cooroy
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Flood Mitigation Investigation: Ashgrove Drive, Cooroy
7 CONCLUSIONS
HWMC have developed a concept design for a flood mitigation option at Ashgrove Drive, Cooroy.
This investigation has been carried out for Noosa Council and the mitigation options assessed for
this investigation have been developed in consultation with Council, DTMR and GHD.
The preferred mitigation option involves a diversion channel running parallel to the Bruce Highway
which will convey floodwaters in a north-westerly direction towards the main channel of Cooroy
Creek.
The 25mm peak flood level impact for the 1% AEP event across the future open space / drainage
reserve of the Greenwood Grove development site will need to be approved by the developer
(PEET).
It is expected that the mitigation concept developed for this investigation will be subject to detail
design by GHD who are the civil engineers for the Bruce Highway Upgrade.
It is expected that these mitigation works will be constructed at the same time as the Bruce Highway
Upgrade.
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