UPDATED DA - Attachment 7 - Flood Impact Assessment

                                         Table 3-2 Existing Hydraulic Structures
                            Type            Upstream      Downstream
                                           Invert Level   Invert Level        Size     No. of   Length
                  ID      C=circular
                                             (m AHD)        (m AHD)          (mm)      Pipes     (m)
                         R=box culvert
                 A01          C               15.464         15.262           600        1       17.3
                  B1          C               15.538         15.291           600        2       12.3
                  C1          C               15.526         15.394           600        1       11.9
                  D1          C               12.972         12.574           450        4       12.3
                  E1          C               14.185         12.849           450        1       26.2
                  G1          C               13.393         13.363           500        1       9.7
                  G2          C               13.716         13.652           450        1       4.7
                  T1          C               20.05           19.86           600        1       30.8
                  T2          C               21.384         21.234           525        1       14.5
                  T3          C               18.722         18.572           900        2       31.1
                  T4          R               18.41          18.262        900x300       1       13.9
                  T5          C               18.033         17.883           375        1       12.7
                  T6          C               17.164         17.014           375        1       19.2
                  T7          C               15.15          14.993           375        1       12.0
                 T11          C               23.05          22.899           450        2       16.3
                 T12          C               23.156         23.589           500        1       12.6
                 T13          C               23.84           23.59           375        1       7.3
                  H1          R               16.798         16.735        1200x400      1       14.8



                                         Table 3-3 Developed Hydraulic Structures

                            Type            Upstream      Downstream
                                                                                       No. of   Length
                   ID     C=circular       Invert Level   Invert Level     Size (mm)
                                                                                       Pipes      (m)
                         R=box culvert       (m AHD)        (m AHD)
                 DEV01        R               12.25          12.20        2100x1500      6       9.9




Noosa Shire Council                                                                             8
M25-0045Rpt – 244035– February 2025