2160 IWMP Report_Jan2022

POST DEVELOPMENT                   noosa 100-Year Duration=6 min, Inten=295.9 mm/hr, Cf=1.20
Prepared by HP Inc.                                                              Printed 21/01/2022
HydroCAD® 10.00-26 s/n 05328 © 2020 HydroCAD Software Solutions LLC                          Page 6

                         Time span=0.00-3.00 hrs, dt=0.01 hrs, 301 points
                         Runoff by Rational method, Rise/Fall=1.0/1.7 xTc
          Reach routing by Muskingum-Cunge method - Pond routing by Stor-Ind method

Subcatchment 2S: New Roof - West Runoff Area=1,269.0 m² 100.00% Impervious Runoff Depth=40 mm
                                                    Tc=6.0 min C=1.00 Runoff=0.10446 m³/s 0.051 Ml

Subcatchment 4S: New Equivalent           Runoff Area=20.5 m² 0.00% Impervious Runoff Depth=34 mm
                                  Tc=6.0 min Frequency Adjusted C=0.84 Runoff=0.00142 m³/s 0.001 Ml

Subcatchment 6S: New Equivalent           Runoff Area=21.5 m² 0.00% Impervious Runoff Depth=34 mm
                                  Tc=6.0 min Frequency Adjusted C=0.84 Runoff=0.00149 m³/s 0.001 Ml

Subcatchment 7S: New Roof - East Runoff Area=1,275.0 m² 100.00% Impervious Runoff Depth=40 mm
                                                    Tc=6.0 min C=1.00 Runoff=0.10495 m³/s 0.051 Ml

Reach 4R: Creek                                                         Inflow=0.20421 m³/s 0.103 Ml
                                                                       Outflow=0.20421 m³/s 0.103 Ml

Pond 1P: 4,000L Slimline Tank - Peak Elev=109.044 m Storage=4.0 m³ Inflow=0.04900 m³/s 0.037 Ml
              132 mm Round Culvert n=0.010 L=2.00 m S=0.6250 m/m Outflow=0.04850 m³/s 0.037 Ml

Pond 8P: 4,000L Slimline Tank -  Peak Elev=109.044 m Storage=4.0 m³ Inflow=0.04900 m³/s 0.037 Ml
             132 mm Round Culvert n=0.010 L=10.00 m S=0.0700 m/m Outflow=0.04850 m³/s 0.037 Ml

Link 3L: (new Link)                                  below 0.04900 m³/s Inflow=0.10587 m³/s 0.051 Ml
                                      Primary=0.04900 m³/s 0.037 Ml Secondary=0.05687 m³/s 0.015 Ml

Link 5L: (new Link)                                  below 0.04900 m³/s Inflow=0.10644 m³/s 0.052 Ml
                                      Primary=0.04900 m³/s 0.037 Ml Secondary=0.05744 m³/s 0.015 Ml

        Total Runoff Area = 0.2586 ha Runoff Volume = 0.103 Ml Average Runoff Depth = 40 mm
                                    1.62% Pervious = 0.0042 ha 98.38% Impervious = 0.2544 ha