6.5.22 - Flooding Report 5 may

      LIST OF TABLES
      Table 2-1: Summary of Study Data ..................................................................................................... 6
      Table 3-1: Catchment Details .............................................................................................................. 7
      Table 3-2: Rainfall Depths ..................................................................................................................... 8
      Table 3-3: 1% AEP Peak Flow Verification .......................................................................................... 8
      Table 3-4: 1% AEP Peak Flow Comparison ......................................................................................... 9
      Table 4-1: Model Roughness Values ................................................................................................. 10
      Table 4-2: Model Culvert Information ............................................................................................... 11
      Table 4-3: Existing and Proposed Peak discharge at the Site Boundary. ..................................... 12
      Table 4-4: 1% (2100) AEP Flood Storage Comparison. ................................................................... 13
      Table 4-5: Recommended Minimum Building Envelope and Finished Floor Level ..................... 14
      Table 4-6: PMF Time of Inundation and Rate of Rise. ..................................................................... 17


      LIST OF FIGURES
      Figure 1-1: Site Location (Source: QGIS Open Street Map 2021) ................................................... 1
      Figure 1-2: NSC Flood Hazard Overlay Mapping (Source: NSC Interactive Mapping) ............... 2
      Figure 3-1: NSC Flood Search Levels (orange box) versus Site Model Results (white box) ......... 9
      Figure 4-1: Section Across Internal Road Extension ........................................................................ 14
      Figure 4-2: DFE (1% (2100) AEP) Peak Water Surface Elevation Reporting Locations ................ 15


      APPENDICES
                              Development Plans
                              Catchment Plan
                              Rainfall Depths
                              TUFLOW Model Layout Plan
                              ARR Blockage Assessment
                              Existing Flood Maps (E02)
                              Proposed Flood Maps (P03)
                              Flood Afflux Maps (P03-E02)
                              Severe Storm Assessment (P03a)
                              GCCC Flood Refuge Guideline
                              Flood Hazard Overlay Code Response Flood Hazard Overlay Code Response




21-0288-FS001-V5 | Flood Investigation | 60 Glenridge Drive, Cooroibah                                                                                     | iii