Attachment 5 - Stormwater Managment Plan · 132007.12.8

    iWBNM Lite

             iWBNM Lite

1 Project Details
                         Project ID
               Project Description     Carpark - MITIGATED CASE
                   Project Location    Lot 4 Goodchap Street, Noosaville


2 General Parameters                                                                               3 Rain Gauge Data

               Lag Parameter (C)                          2                                                Choose Rain Gauge from Database                                                     Add to Database:   Name      Noosa          Zone                  3     Add
                 Stream Lag Factor                        1                                                                                                                                         2yr           50yr
                                                                                                            Noosa
             Calculation Timestep                         1 mins                                                                                                                        1 hr        52.3          94.28         4.4       F2            Ave Rain     1674
                        Initial Loss                     20 mm                                          Noosa                                                                          12 hr       10.25          23.64        17.61      F50            %Rough        0
             Continuing Loss Rate                       2.5 mm/hr                                                                                                                      72 hr        3.45           8.6          0.1       G         MAF (0.0-1.0)    0.87


4 Topology                                                                                         5 Structure Data
          Subarea          Name           Connects to          Area       Impervious                                           Subarea           IWL          Storage_Fac                          Type      %Per to LS     %Imp to LS               Elevation       Storage
                          SINK                                  ha             %                                               SUB2               0                  1                             LOCAL          100           100                      m             m3
                  1 SUB1               SUB2                   0.2616          56                                    Weir          1                2                 Pipe/Box                        1              2              3                     0              0
                  2 SUB2               SINK                   0.2022          90                          Diverts to Sub SINK                                    Diverts to Sub SINK                                                                    0.4            23
                  3                                                                                       Crest Elev [m]         0.4                                 Invert [m]                      0                                                  0.8            46
                  4                                                                                          Length [m]          2.7                               No. Barrels                       1
                  5                                                                                          Weir Coeff          1.6                              Ent. Type                          1
                  6                                                                                        Disch-Factor           1                         Dia/(Width)[mm]                         450
                  7                                                                                          Directed to        TOP                              (Height)[mm]
                  8                                                                                        Delay [mins]           0                               Disch-Factor                      1
                  9                                                                                                                                                Directed to                     TOP
                 10                                                                                                                                               Delay [mins]                      0
             Total                                              0.5          70.8


6 Storm Data                                                                                       7 Save & Run
            Storm           ARI          Duration [mins]
                  1          1                   25                                                                 Save & Run                     Shortcut: Shift + Ctrl + L
                  2          2                   25
                  3          5                   25                                                                        Most Recent File: V:\Projects\30031152 - Minor Projects\M01\M03.wbn
                  4         10                   25                                                             Location of WBNMRun.exe: I:\Projects\0 SMEC Urban\30031766 - 167-183 Goldmine Road, Ormeau\005_Ops\Design\WBNM\M01\WBNMrun.exe
                  5         20                   25
                  6         50                   25
                  7        100                   25
                  8        PMF                   15


8 Results
                      RESULTS FOR:     V:\Projects\30031152 - Minor Projects\M01\M03_Meta.out
            Storm            1                    2             3              4              5                 6                 7                8                                                                        Hydrographs
                        1 Yr 25 Min       2 Yr 25 Min       5 Yr 25 Min   10 Yr 25 Min   20 Yr 25 Min    50 Yr 25 Min       100 Yr 25 Min   PMF Yr 15 Min                                1.4
                                            3
     Peak Flowrates at Subarea Outlet [Q m /s]                                                                                                                                                                                                                          SUB2(1 Yr 15
                                                                                                                                                                                                                                                                        Min)
             SUB1         0.057                 0.086         0.118         0.135          0.159            0.170               0.190           0.713
                                                                                                                                                                                         1.2                                                                            SUB2(2 Yr 15
             SUB2         0.100                 0.138         0.185         0.212          0.249            0.269               0.302           1.245                                                                                                                   Min)

                                                                                                                                                                                                                                                                        SUB2(5 Yr 15
                                                                                                                                                                                                                                                                        Min)

                                                                                                                                                                                           1                                                                            SUB2(10 Yr
                                                                                                                                                                                                                                                                        15 Min)

                                                                                                                                                                                                                                                                        SUB2(20 Yr
                                                                                                                                                                                                                                                                        15 Min)

                                                                                                                                                                                         0.8                                                                            SUB2(50 Yr
                                                                                                                                                                     Flowrate [m3/s]




                                                                                                                                                                                                                                                                        15 Min)

                                                                                                                                                                                                                                                                        SUB2(100 Yr
                                                                                                                                                                                                                                                                        15 Min)

                                                                                                                                                                                         0.6                                                                            SUB2(PMF
                                                                                                                                                                                                                                                                        Yr 15 Min)

                                                                                                                                                                                                                                                                        ()


                                                                                                                                                                                         0.4                                                                            ()

       Inflow Peak        0.064                 0.085         0.107         0.119          0.136            0.142               0.157           0.560     m3/s
                                                                                                                                                                                                                                                                        ()
     Outflow Peak         0.056                 0.073         0.093         0.104          0.119            0.126               0.140           0.563        3
                                                                                                                                                          m /s
    Inflow Volume           51                    65            82            92            105              122                 136             435      m3                             0.2                                                                            ()


    Max Vol Stored           9                    11            14            16             18               19                  22              31      m  3
                                                                                                                                                                                                                                                                        ()

   Max Water Elev         0.149                 0.196         0.248         0.278          0.319            0.339               0.376           0.531     m                                0                                                                            ()

                                                                                                                                                                                               0             50              100              150             200
                                                                                                                                                                                                                                                                        ()


                                                                                                                                                                                        -0.2

                                                                                                                                                                                                                          Time [mins]




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