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6.5.22 - Flooding Report 5 may
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CONTENTS
EXECUTIVE SUMMARY ............................................................................................................................ I
1. INTRODUCTION .............................................................................................................................. 1
Site Location .................................................................................................................................. 1
Response to Further Advice ........................................................................................................ 3
Response to Information Request ............................................................................................... 4
2. AVAILABLE DATA ........................................................................................................................... 6
3. HYDROLOGY .................................................................................................................................. 7
Catchment .................................................................................................................................... 7
Rainfall Depths .............................................................................................................................. 8
Peak Flow Rates and Verification ............................................................................................... 8
3.3.1. TUFLOW Peak Flows .................................................................................................. 8
4. HYDRAULICS ................................................................................................................................. 10
Model Setup ................................................................................................................................ 10
4.1.1. Topography ............................................................................................................. 10
4.1.2. Inflow ........................................................................................................................ 10
4.1.3. Roughness ................................................................................................................ 10
4.1.4. Boundary .................................................................................................................. 10
4.1.5. Culverts..................................................................................................................... 10
Model Scenarios ......................................................................................................................... 11
4.2.1. Existing Scenario (E02) ............................................................................................ 11
3.2.3 Proposed Scenario (P03) ........................................................................................ 11
Results ........................................................................................................................................... 12
4.3.1. Existing Scenario ...................................................................................................... 12
4.3.2. Proposed Scenario ................................................................................................. 12
4.3.3. Flood Hazard Overlay Code Response ................................................................ 17
5. CONCLUSION .............................................................................................................................. 18
6. REFERENCES ................................................................................................................................. 19
21-0288-FS001-V5 | Flood Investigation | 60 Glenridge Drive, Cooroibah | ii
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