Development Application part 2 of 2 Report and Plans MCU13/0030

PRE DEVELOPMENT Cooroy Aged ca               noosa 10-Year         Ouration=6 min, Inten=20B.9 mm/hr
Prepared by {enter   your company name    here}                                       Printed 17/02/2013
HydroCAOO 10.00 sIn 05328 @2011 HydroCAD Software Solutions LLC

                         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 2S: Grass carpark area     Runoff Area=957.0 m2 0.00% Impervious         Runoff Depth=12 mm
                                                  Tc=10.0 min       C=0.70   Runoff=0.02336 m3/s 0.011 MI


Subcatchment 5S: Existing roof     Runoff Area=2,806.0 m2     100.00% Impervious      Runoff Depth=28 mm
                                                      Tc=6.0 min    C=1.00   Runoff=0.16306 m3/s 0.079 MI


Subcatchment 6S: grass for new roof     Runoff Area=768.0 m2       0.00% Impervious   Runoff Depth=12 mm
                                                  Tc=10.0 min       C=0.70   Runoff=0.01874 m3/s 0.009 MI


Reach 4R: (new Reach)                                                         Inflow=0.20516 m3/s 0.100 MI
                                                                             Outflow=0.20516 m3/s 0.100 MI


        Total Runoff Area = 0.4531 ha   Runoff Volume = 0.100 MI        Average Runoff Depth 22 mm=


                                    38.07% Pervious = 0.1725 ha         61.93% Impervious 0.2806 ha
                                                                                              =