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DRAINS Modelling Results
Project number:     20220130                                                          Calculations:               B. Parry
Street Address:     22 Delorme St
Locality:           Noosa Heads, Noosa Shire Council                                  Date:                       13/05/2022




                                             Delorme Street
       A.E.P                                                                                  Qchange (%)
                        Qexisting (m³/s)     Qproposed (m³/s)     Qchange (m³/s)
                 1EY                 0.014                0.015               0.001                          7%
                 50%                 0.016                0.018               0.002                         13%
               0.2 EY                0.025                0.027               0.002                          8%
                 10%                 0.032                0.032                   0                          0%
                  5%                 0.036                0.036                   0                          0%
                  2%                 0.041                0.042               0.001                          2%
                  1%                 0.045                0.046               0.001                          2%




                                             Delorme Street
       A.E.P                                                                                  Qchange (%)
                        Qexisting (m³/s)     Qmitigated (m³/s)    Qchange (m³/s)                                               Prelim Attenuation Sizing
                 1EY                 0.014                0.014                   0                       0%                   Slimline 4,000L
                 50%                 0.016                0.016                   0                       0%                   Surface Area                      2.4
               0.2 EY                0.025                0.024              -0.001                      -4%                   1.86 inlet height
                 10%                 0.032                0.028              -0.004                     -13%                   1.86 total height
                  5%                 0.036                 0.03              -0.006                     -17%                   58mm low flow outlet at base
                  2%                 0.041                0.035              -0.006                     -15%                   100mm high flow outlet at 1.76m
                  1%                 0.045                 0.04              -0.005                     -11%