Stormwater management plan 20220156 9 Kauri St SWMP

                                            Figure 3.2 – DRAINS Pre-development catchment




                                           Figure 3.3 – DRAINS Post-development catchment


The results of the modelling against the range of design storms for the development under the existing and
proposed development conditions are shown in Table 3.1 Existing and proposed unmitigated site peak discharge
rates.
                              Table 3.1 Existing and proposed unmitigated site peak discharge rates

                                                                           Kauri Street
                                                                                                        Qchange
                                           A.E.P               Qexisting      Qproposed    Qchange       (%)
                                                               (m³/s)         (m³/s)       (m³/s)
                                            1EY                 0.021          0.035        0.014        67%
                                            50%                 0.026          0.043       0.017         65%
                                           0.2 EY               0.044          0.072       0.028         64%
                                            10%                 0.060          0.086       0.026         43%
                                             5%                 0.075          0.101       0.026         35%
                                             2%                 0.094          0.126       0.032         34%
                                             1%                 0.106          0.147       0.041         39%

Project number 20220156
File RECOR Stormwater Management Report - 20220156.docx, 2022-08-08 Revision 0                                      Page 9 of 26

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