2160 IWMP Report_Jan2022

POST DEVELOPMENT                           noosa 10-Year Duration=6 min, Inten=203.1 mm/hr
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=27 mm
                                                 Tc=6.0 min C=1.00 Runoff=0.07168 m³/s 0.035 Ml

Subcatchment 4S: New Equivalent        Runoff Area=20.5 m² 0.00% Impervious Runoff Depth=19 mm
                                                 Tc=6.0 min C=0.70 Runoff=0.00081 m³/s 0.000 Ml

Subcatchment 6S: New Equivalent        Runoff Area=21.5 m² 0.00% Impervious Runoff Depth=19 mm
                                                 Tc=6.0 min C=0.70 Runoff=0.00085 m³/s 0.000 Ml

Subcatchment 7S: New Roof - East Runoff Area=1,275.0 m² 100.00% Impervious Runoff Depth=27 mm
                                                 Tc=6.0 min C=1.00 Runoff=0.07202 m³/s 0.035 Ml

Reach 4R: Creek                                                        Inflow=0.13354 m³/s 0.071 Ml
                                                                      Outflow=0.13354 m³/s 0.071 Ml

Pond 1P: 4,000L Slimline Tank - Peak Elev=108.959 m Storage=3.8 m³ Inflow=0.04900 m³/s 0.031 Ml
              132 mm Round Culvert n=0.010 L=2.00 m S=0.6250 m/m Outflow=0.04732 m³/s 0.031 Ml

Pond 8P: 4,000L Slimline Tank -  Peak Elev=108.961 m Storage=3.8 m³ Inflow=0.04900 m³/s 0.032 Ml
             132 mm Round Culvert n=0.010 L=10.00 m S=0.0700 m/m Outflow=0.04734 m³/s 0.032 Ml

Link 3L: (new Link)                               below 0.04900 m³/s Inflow=0.07249 m³/s 0.035 Ml
                                   Primary=0.04900 m³/s 0.031 Ml Secondary=0.02349 m³/s 0.004 Ml

Link 5L: (new Link)                               below 0.04900 m³/s Inflow=0.07287 m³/s 0.035 Ml
                                   Primary=0.04900 m³/s 0.032 Ml Secondary=0.02387 m³/s 0.004 Ml

        Total Runoff Area = 0.2586 ha Runoff Volume = 0.071 Ml Average Runoff Depth = 27 mm
                                    1.62% Pervious = 0.0042 ha 98.38% Impervious = 0.2544 ha