Attachment 3 - Stormwater Management Plan

DRAINS Modelling Results
Project number:    20220116                                                           Calculations:         B. Parry
Street Address:    6 Martin St
Locality:          Peregian Beach, NSC                                                Date:                 6/09/2022




Pre / Post Comparison


A.E.P                 Qy Pre (m3/s)           Qy Post (m3/s) Qchange (m3/s)           Qchange (%)
               1 EY                   0.024             0.027                 0.003                   13%
           50% AEP                    0.029             0.029                 0.000                    0%
             0.2 EY                   0.044             0.045                 0.001                    2%
           10% AEP                    0.053             0.053                 0.000                    0%
            5% AEP                    0.061             0.061                 0.000                    0%
            2% AEP                    0.070             0.071                 0.001                    1%
            1% AEP                    0.078             0.078                 0.000                    0%