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' �P <br /> 4203 NORTH SHORE DRNE Type ll 24hr Rainfa11=6.00" <br /> Prepared by Terra Engineering Inc. Page� <br /> HydroCAD�7.00 s/n 001544 �1986-2003 Applied Microcomputer Systems 10/11/2005 <br /> Subcatchment 1S: EXISTING DRAINAGE AREA (FLOWS TO EAST) <br /> Runoff = 0.99 cfs @ 12.04 hrs, Volume= 0.�56 af, Depth= 3.61" <br /> Fiunoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs <br /> Type II 24-hr Rainfa11=6.00" <br /> Area (sf� CN Description <br /> 2,214 98 Paved parking &roofs <br /> 5,931 74 >75% Grass cover, Good, HSG C <br /> 8,145 81 Weighted Average <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feefl (ft!ft) (ft/sec) (cfs) <br /> 12.8 150 0.0800 0.2 Sheet Flow, <br /> Grass: Dense n= 0.240 P2=2.50" <br /> Subcatchment ZS: PROPOSED DRAINAGE AREA(FLOWS TO EAST) <br /> Runoff = 0.70 c#s @ 12.01 hrs, Volume= 0.035 af, Depth= 2.94" <br /> Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs <br /> Type II 24-hr Rainfa11=6.00" <br /> Area (sfl CN Description <br /> 6,177 74 >75% Grass cover, Good, HSG C <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 9.4 80 0.0500 0.1 Sheet Flow, <br /> Grass: Dense n= 0.240 P2= 2.50" <br />