2015-03-31 I&S Committee - Item 4 - Attachment 1 - Flood Mitigation Investigation Ashgrove Dr Cooroy

Flood Mitigation Investigation: Ashgrove Drive, Cooroy




                                                               TABLE OF CONTENTS

1     INTRODUCTION ...............................................................................................................................................1
2     AVAILABLE DATA .............................................................................................................................................2
3     EXISTING SITE TOPOGRAPHY AND FLOODING CHARACTERISTICS ....................................................................3
4     FLOOD MITIGATION ANALYSIS ........................................................................................................................5
    4.1      METHODOLOGY ..................................................................................................................................................5
    4.2      BASE CASE .........................................................................................................................................................5
    4.3      OPTIONS ANALYSIS ..............................................................................................................................................5
5     DISCUSSION ON THE PREFERRED OPTION........................................................................................................9
    5.1      PEAK FLOOD LEVEL IMPACTS .................................................................................................................................9
6     KEY HYDRAULIC REQUIREMENTS & DESIGN INPUTS FOR THE PREFFERED OPTION ........................................11
7     CONCLUSIONS ...............................................................................................................................................13
8     QUALIFICATIONS & LIMITATIONS ..................................................................................................................14
9     REFERENCES ..................................................................................................................................................15



List of Appendices

    Appendix A             Existing Case Peak Flood Depth and Flow Velocity Mapping
    Appendix B             Concept Design of Preferred Mitigation Option
    Appendix C             Mitigated Case Peak Flood Depth and Flow Velocity Mapping
    Appendix D             Peak Flood Level Impact Mapping




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