2160 IWMP Report_Jan2022

PRE DEVELOPMENT                            noosa 10-Year Duration=6 min, Inten=203.1 mm/hr
Prepared by HP Inc.                                                            Printed 20/01/2022
HydroCAD® 10.00-26 s/n 05328 © 2020 HydroCAD Software Solutions LLC                        Page 5

                        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 Stor-Ind method - Pond routing by Stor-Ind method

Subcatchment 1S: Existing Equivalent Runoff Area=586.0 m² 0.00% Impervious Runoff Depth=19 mm
                                                 Tc=6.0 min C=0.70 Runoff=0.02317 m³/s 0.011 Ml

Subcatchment 2S: Existing          Runoff Area=2,000.0 m² 100.00% Impervious Runoff Depth=27 mm
                                                  Tc=6.0 min C=1.00 Runoff=0.11297 m³/s 0.055 Ml

Reach 4R: Creek                                                        Inflow=0.13614 m³/s 0.066 Ml
                                                                      Outflow=0.13614 m³/s 0.066 Ml

        Total Runoff Area = 0.2586 ha Runoff Volume = 0.066 Ml Average Runoff Depth = 26 mm
                                    22.66% Pervious = 0.0586 ha 77.34% Impervious = 0.2000 ha