stormwater mgJ00300R1V1_25_Kauri_St_Cooroy_Complete · MCU18/0165

25 Kauri St Cooroy




Image 4-3 – Total Site Mitigated Developed Design Runoff Hydrographs


Table 4-7 shows a comparison of peak flow rates between the base case and the mitigated
developed case. It shows that the detention storage can reduce peak flows to less than or equal
to those of the base case.

Table 4-7      Peak Flow Comparison – Base Case Vs Mitigated Developed Case

                                        Mitigated
                     Existing Site                         Difference         Difference
   Event                             Developed Case
                           3                                    3
                        (m /s)                               (m /s)              (%)
                                          (m3/s)
  1% AEP                 0.23              0.22               -0.01               -4%
  10% AEP                0.15              0.12               -0.03              -20%
  50% AEP                0.07              0.07                 0                  0%




J00300R1V1                                                                                  10