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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
Option 2 – Resumption of 25 Ashgrove Drive
This option involved resumption of the existing residential property at 25 Ashgrove Drive in order
to provide a flood corridor through the estate with sufficient width to cater for Cooroy Creek flood
waters. In addition to this, it was assumed that an earth bund would be constructed along the rear
of the Ashgrove Drive lots to direct flows to the flood corridor.
This flood mitigation option was not selected as the preferred mitigation option because it caused
flood impacts over the existing residential properties downstream of Ashgrove Drive. There would
also be a high cost associated with the property resumption.
The basic line-work applied in the TUFLOW flood modelling is shown on Image 4-2 below along
with the mitigated case 1% AEP flooding characteristics.
Image 4-2 Option 2 Flood Model Line-work and Associated 1% AEP Flood Characteristics
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