Attachment 7 - Flood Impact Assessment - Covey · 132005.638.06

                                   Table 3-5 - Peak Afflux for all Stages and Design Events
          Region ID /                                                  Peak Afflux (mm)*
                               AEP
           Location                           Stage 1        Stage 2    Stage 3     Stage 4   Stage 5   Stage 6
                          50%AEP                21             21         43          43        43        75
                          10%AEP                 0              0         58          58        58        105
                1
                          1%AEP                  0              0         51          51        51        125
                          1%AEPCC                0              0         62          62        62        147
                          50%AEP                 6              6         15          15        15        67
                          10%AEP                 0              0          9           9         9        65
                2
                          1%AEP                  1              1         13          13        13        82
                          1%AEPCC                1              1         18          18        18        90
                          50%AEP                12              9         11           5         8        35
                          10%AEP                 5              3          5           0         2        32
                3
                          1%AEP                  5              0          0           0         2        21
                          1%AEPCC                0              0          0           0         0        19

         *Orange highlighting denotes afflux greater than 20mm




                                       Figure 3-6 – Offsite Impacts Reporting Locations

         Increases in water surface level of 20-150 mm were noted within and in the vicinity of the easement
         adjacent the south-western boundary (Location 1). Under the 50%AEP event increases in water surface
         level of 21-75mm occur throughout all development stages within the easement. For 10%, 1% and 1%
         AEP events, the water level increases from Stage 3 onwards, with affluxes ranging from 51mm-147mm
         and the largest increase occurring in the 1%AEPCC event. During these events the largest impacts occur
         in a single isolated point, within the Emu Mountain Road reserve as opposed to the easement itself.




Flood Impact Assessment                                                                                   Page 17 of 25
Project No 244035 | Ref No M25-0479Rpt – Issue A – January 2026